Answer:
Balance molecular equation:
K2CO3(aq) + Sr(NO3)2(aq) → SrCO3(s) + 2KNO3(aq)
Net ionic equation:
CO3∧-2(aq) + Sr∧+2(aq) → SrCO3(s)
Explanation:
Potassium carbonate = K2CO3
Strontium nitrate = Sr(NO3)2
Chemical equation:
K2CO3 + Sr(NO3)2 → SrCO3 + KNO3
Balance chemical equation with physical states:
K2CO3(aq) + Sr(NO3)2(aq) → SrCO3(s) + 2KNO3(aq)
Ionic equation:
2K+(aq) + CO3∧-2(aq) + Sr∧+2(aq) + 2NO∧-3(aq) → SrCO3(s) + 2K+(aq) + 2NO∧-3(aq)
Net ionic equation:
CO3∧-2(aq) + Sr∧+2(aq) → SrCO3(s)
2K+ and 2NO∧-3 ions are spectator ions that's way these are not written in net ionic equation.
Spectator ions:
These are the ions that are present same on both side of chemical reaction and does not effect the equilibrium.
The molecular equation for the reaction between potassium carbonate and strontium nitrate is K2CO3 (aq) + Sr(NO3)2 (aq) → 2KNO3 (aq) + SrCO3 (s). The complete ionic equation is 2K+ (aq) + CO3^2- (aq) + Sr^2+ (aq) + 2NO3^- (aq) → 2K+ (aq) + 2NO3^- (aq) + SrCO3 (s). The net ionic equation is CO3^2- (aq) + Sr^2+ (aq) → SrCO3 (s).
Explanation:The molecular equation for the reaction between potassium carbonate and strontium nitrate is:
K2CO3 (aq) + Sr(NO3)2 (aq) → 2KNO3 (aq) + SrCO3 (s)
The complete ionic equation for the reaction is:
2K+ (aq) + CO32- (aq) + Sr2+ (aq) + 2NO3- (aq) → 2K+ (aq) + 2NO3- (aq) + SrCO3 (s)
The net ionic equation for the reaction is:
CO32- (aq) + Sr2+ (aq) → SrCO3 (s)
Important (question on k12 test)
Which choice tells the two main ways minerals are classified?
chemical makeup and crystal lattice structure
how they can be used and the country they are found in
chemical makeup and how they can be used
how they can be used and how rare they are
Answer:
A new Dana system of classification contains 78 different classes of minerals based on composition and then further classified by type and group. To be considered a mineral, a substance must be an inorganic, naturally formed solid, with a specific chemical formula and a fixed internal structure. To test whether something is a mineral, there are several identification tests to which the substance is subjected, including its resistance to scratching, its density in comparison to water, its color, the degree of light it reflects, the color of the powdered mineral, its breakage pattern and its crystalline form.
Explanation:
Answer: chemical makeup and crystal lattice structure
Explanation:
The minerals are the inorganic substances that are extracted beneath the earth crust. These minerals are associated with the gangue particles that are required to be removed by processing.
The minerals can be classified on the basis of the chemical and physical properties. The chemical properties define the chemical composition of the mineral. The physical properties define how minerals react with the external environment.
Thus chemical makeup and crystal lattice structure can be a useful approach to classify the minerals as the minerals may differ chemically as well as in structural makeup.
I have no idea how to get to the correct answer, please help, chem is hard
Answer:
68027 cells
Explanation:
First they need to be in the same units.
To convert 0.0147mm^3 into cm^3, divide by 1000
This gives 0.0000147cm^3
Next, divide 1 cm^3 by 0.0000147 cm^3
[tex] \frac{1}{0.0000147} [/tex]
=68027.2108844
= 68027 cells
Answer:
68027 cells
Explanation:
Does anyone know how to do this?
C3H5N3O9 contains 100.00g of carbon, calculate the mass of the molecule
I suppose that the question ask the following:
What is the mass of a sample, composed of C₃H₅N₃O₉ molecule, that contains 100 g carbon?
First we calculate the molecular mass of our molecule C₃H₅N₃O₉.
molecular mass = 12 × 3 + 1 × 5 + 14 × 3 + 16 × 9 = 227 g/mol
Now we devise the following reasoning:
if 227 g of our molecule contains 27 g of carbon
then X g of our molecule contains 100 g carbon
X = (100 × 227) / 27 = 840.7 g
Which components are part of all scientific investigations? Check all that apply.
scientific question
hypothesis
variables
control
procedure
conclusion
Final answer:
The components that are a part of all scientific investigations include a scientific question, hypothesis, variables, control, procedure, and conclusion. These align with the scientific method and are essential in conducting a thorough and systematic inquiry.
Explanation:
The components that are part of all scientific investigations include several elements that align with the scientific method. These are essential for ensuring a systematic approach to the inquiry process. Let's review these components:
Scientific question: This is the starting point of any scientific inquiry, where the observer asks a question about the phenomena of interest.Hypothesis: A hypothesis is an educated guess or a proposed explanation made on the basis of limited evidence, which serves as a starting point for further investigation.Variables: These are elements of the experiment that can be changed or controlled, including independent variables (which are manipulated) and dependent variables (the response to the manipulation).Control: In scientific experiments, a control is a standard of comparison for checking or verifying the results of an experiment.Procedure: This is the step-by-step plan for the experiment, detailing how the hypothesis will be tested.Conclusion: This summarizes the results of the experiment and states whether the hypothesis was supported or not.By following these components, scientists conduct thorough and replicable experiments that contribute to the body of scientific knowledge. Each step is crucial in ensuring results are reliable and valid.
Final answer:
The components of all scientific investigations include a scientific question, a hypothesis, variables, control, procedure, and a conclusion. These elements structure the investigation for consistency and repeatability.
Explanation:
The components that are part of all scientific investigations typically include:
A scientific question which the investigation seeks to answer.A hypothesis, which is a testable prediction made before conducting the experiment.Variables, which include independent variables (that you change), dependent variables (that you observe), and controlled variables (that you keep the same).A control, which is the standard that you compare with the outcomes of the experiment.A procedure, which outlines the steps taken during the experiment.A conclusion, which reflects whether the hypothesis was supported or not based on the experiment's findings.These elements help in structuring a scientific investigation, allowing for repeatability and verifiability by other scientists.
Having molecules that are very close together
Answer:
Solid Molecules
Solid molecules are always together. If you need more help I'm here.
Answer:in solids the molecules are very close together with intermolecar spaces.
Explanation:
The part of the experiment against which results are compared is ______.
independent variable
dependent variable
control
constant
hypothesis
Answer:
Control
Explanation:
The control is the variable that you don't change. Like, imagine you're doing an experiment and are trying to figure out how much of a faster growth rate occurs with fertilized plants. You will compare the fertilized plant to the unfertilized one, which is the control, to see the difference the fertilizer made.
Hope this helped :)
The blank variable in an investigation is the variable that changes in response to changes in the investigation
Answer:
Dependent
Explanation:
It is called that because its value depends on changes the investigator makes.
Hydrogen has three naturally occurring isotopes which figure into the average atomic mass found on the periodic table. (1.00974) : hydrogen -1, hydrogen -2, and hydrogen -3. How do hydrogen -1, hydrogen -2, and hydrogen -3 differ from each other? Which would you guess is most abundant? Explain your answer.
PLEASE HELP ME!!!,! ITS FOR AN IMPORTANT LAB
Answer:
H 1 one proton and no neutrons, H2 one proton and one neutron, H3 one proton and 2 neutrons.
H1 most abundant because average mass is 1.008, meaning far more have a mass of 1
Explanation:
Which fields of science do you think might use data tables and graphs more than others
Answer:
Statistics
Explanation:
The science of statistics deals with the collection, storage, manipulation, analyzing, visualizing and interpretation of data. Graphs and tables are very good tools in order to achieve statistical problems. Tables can be used to compare a given data set and present them in a very simple relational way. Graphs are useful for data visualization and their trend is vital in making interpretations.
what is the square root of a negative number
Answer:
Negative numbers don't have real square roots since a square is either positive or 0.
Explanation:
Negative numbers don't have real square roots since a square is either positive or 0.
It depends, but this is how I would do it:
Let's take the square root of -8 --> [tex]\sqrt{-8}[/tex]
First, I would take out an "i" and put it outside of the square root:
[tex]i\sqrt{8}[/tex]
The i represents the negative sign. Then, I would treat the square root of 8 as a normal problem and simplify by factoring it:
Factors of 8: 2,2,2
Because you're looking for a square root and you can "loop" two 2s together, you can take one set out:
[tex]2i\sqrt{2}[/tex] would be your final answer.
Hope I helped :)
A tool that changes light Energy
into electricity is a
Answer:
Photovoltaic cell or solar cells
Explanation:
Solar cells are cells that converts light energy from the sun into electrical energy for use in appliances. Light energy impinges on these cells, the photons of light causes electrons in the solar cells to move thereby resulting in the production of electricity in the cells.
Question 1
a. How many grams of sucrose would you dissolve in
water for a total volume of 500 mL to make a 5%
(weight/volume) solution?
actually it is 5% of 100 is 5
Therefore, 5% of 500 is 5 x 5 = 25g
Taking into account the definition of weight / volume percentage (% w/v), the mass of sucrose would be 25 grams.
In first place, it is necessary to know that a solution is a mixture of two or more components, perfectly homogeneous since each component is intimately mixed with the other, in such a way that they lose their individual characteristics.
The latter means that the constituents are indistinguishable and the whole is presented in a single well-defined phase.
In a solution, a solute is that component that is found in the least amount and is the one that dissolves, while the solvent is that component that is in the greatest amount and is the medium that dissolves the solute.
The weight / volume percentage (% w/v) expresses the grams of solute that are dissolved in 100 mL of solution. The expression for its calculation is:
[tex]weight/volume percentage=\frac{mass solute}{volume solution}x100[/tex]
In this case, you know that:
weight / volume percentage= 5% mass solute= ?volume solution= 500 mLReplacing:
[tex]5=\frac{mass solute}{500 mL} x100[/tex]
Solving:
[tex]mass solute=\frac{5x500 mL}{100}[/tex]
mass solute= 25 grams
In summary, the mass of sucrose would be 25 grams.
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https://brainly.com/question/18598125?referrer=searchResultshttps://brainly.com/question/14308842?referrer=searchResultshttps://brainly.com/question/14308842?referrer=searchResultsConsider the reaction of Mg3N2 with H2O to form Mg(OH)2 and NH3. If 4.33 g H2O is reacted with excess Mg3N2 and 6.26 g of Mg(OH)2 is ultimately isolated, what is the percent yield for the reaction?
Answer:
89.34%
Explanation:
First, write a balanced reaction.
Mg3N2 + 6H2O --> 3Mg (OH)2 + 2NH3
Next determine the moles of the known substance, or limiting reagent ( H2O)
n= m/MM
n ( H2O) = 4.33/(1.008×2)+16
n(H2O)= 0.2403
Use the mole ratio to find the moles of Mg(OH)2
0.2403 ÷2
n (Mg (OH)2) = 0.1202
Next, find the theoretical mass of Mg (OH)2 that should have been produced
m= n × MM
m= 0.1202 × (24.305 + (16×2) +(1.008 ×2))
=7.007g
To find percentage yield, divide the experimental amount by the theoretical amount and multiply by 100.
6.26/ 7.007 × 100
=89.34%
what happen when a mixture of sand and ammonium chloride is heated?
Answer:
Sublimation is used to separate a mixture of sand and ammonium chloride. Sublimation is a separation process that entails heating a mixture of solids, where one of the solids transitions from solid to gas without passing through the liquid state. ... This process leaves behind the sand in its natural state.
Explanation:
Answer:
When a mixture of sand and ammonium chloride is heated, the ammonium chloride sublimates out and sand is left behind.
Explanation:
Sublimation is the process in which, a substance directly goes into its gaseous state, without passing through the liquid state, on heating.
Which of the following is the best example of a hypothesis?
Glass breaks when you throw a rock at it.
If three or more pounds of pressure is placed on glass, then it will break.
If I push hard on glass it will break.
When glass breaks it is because something was thrown at it.
Answer:
If three or more pounds of pressure is placed on glass, then it will break.
Explanation:
This is a hypothesis because it is a statement that can be tested and can be drawn a conclusion from, as you can see the others can be tested but then you have too many factors that are not taken care of, for example how big will the rock you throw to the glass be, glasses cna break because of changes in temperature, and other factors that weren´t taken into account when doing them that the only one that could work as a hypothesis would be: If three or more pounds of pressure is placed on glass, then it will break.
Final answer:
The best example of a hypothesis is "If three or more pounds of pressure is placed on glass, then it will break," as it is clear, specific, and testable.
Explanation:
The best example of a hypothesis among the given options is: "If three or more pounds of pressure is placed on glass, then it will break." This statement is a good hypothesis because it is testable, provides a specific condition (three or more pounds of pressure), and predicts a measurable outcome (the glass will break). A testable hypothesis is a crucial aspect of the scientific method.
It allows researchers to perform experiments to verify whether the predicted outcomes agree with the hypothesis or not. The process of testing is essential because it provides evidence to support or refute the proposed explanation. Furthermore, an effective hypothesis should ideally be clear and concise, providing a direct answer to a particular question, and should outline conditions that can be empirically examined.
3. Which state of matter takes both the shape and volume of its container?
Answer:
In gaseous form matter take the shape and volume of container.
Explanation:
Properties of gases:
Molecule of gases randomly move every where and occupy all available space.
Gases don't have definite volume and shape and take the shape and volume of container in which it present.
Their densities are very low as compared to the liquid and solids.
Gas molecules are at long distance from each other therefore by applying pressure gases can be compressed.
The very weak inter molecular forces are present between gas molecules.
Properties of Liquid:
Liquid have definite volume but don,t have definite shape.
Their densities are high as compared to the gases but low as compared to the solids.
In liquid, molecules are close to each other and have greater inter molecular forces as compared to the gas molecules.
Properties of solids:
Solids have definite volume and shape.
In solids molecules are tightly pack and very close to each other.
Their melting and boiling point are every high.
The densities of solids are also very high as compared to the liquid and gas.
There are very strong inter molecular forces are present between solid molecules.
Which of the following best explains the position of the two atoms in the periodic table? (4 points)
Atoms in the periodic table are positioned based on their chemical properties and electron configuration. Elements with the same number of valence electrons are placed in the same group. The periodic table is read left to right and top to bottom, with elements arranged in order of increasing atomic number.
Explanation:The position of two atoms in the periodic table can be explained based on their chemical properties and electron configuration. Atoms that have the same number of valence electrons, or electrons in their outermost energy level, are placed in the same group. For example, lithium (Li) and sodium (Na) are both in Group 1 because they each have one valence electron. The periodic table is read left to right and top to bottom, with elements arranged in order of increasing atomic number. The atomic number represents the number of protons in an atom's nucleus.
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Give the volume indicated. Be sure to include all significant figures.
Options:
3.22
3.2
3.3
3.35
___mL
Answer: 3.22
Explanation: it did not go above the 3rd line instead it stayed about 2 or 3 cm below.
Answer:
3.22 mL
Explanation:
To see the volume indicated you have to look at the center of the tube, not at the region near the glass of the cylinder. It's clear from the picture that the level is slightly above 3.2 and less than 3.3, so the answer is 3.22 mL
what is the density of an 820 g sample of pure silicon occupying a 350 cm3 container
Answer:
2.343 g/ cm³
Explanation:
Density:
Density is equal to the mass of substance divided by its volume.
Units:
SI unit of density is Kg/m3.
Other units are given below,
g/cm3, g/mL , kg/L
Formula:
D=m/v
D= density
m=mass
V=volume
Symbol:
The symbol used for density is called rho. It is represented by ρ. However letter D can also be used to represent the density.
Given data:
density = ?
volume= 350 cm³
mass= 820 g
Now we will put the values in the formula,
d= m/v
d= 820 g/ 350 cm³
d= 2.343 g/ cm³
The density of silicon is 2.343 g/ cm³
The density of a sample of pure silicon, given its mass is 820 grams and its volume is 350 cm^3, is calculated by dividing mass by volume. Using this formula, the density of the silicon sample is approximately 2.34 g/cm^3.
Explanation:The subject of your question falls under Physics and it is about the concept of density. More specifically, you are asking about the density of a sample of pure silicon. Density is defined as the mass of an object divided by its volume which is usually measured in grams per cubic centimeter (g/cm3). Given that the mass of the silicon sample is 820 grams and its volume is 350 cm3, we can calculate the density using the following formula for density:
Density = Mass / Volume
In this case, Density = 820g / 350cm3. So, the density of the silicon sample is approximately 2.34 g/cm3.
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What is the name and symbol of the element in the second row and fourteenth column of the periodic
table?
O aluminum (AI)
carbon (C)
silicon (Si)
cobalt (Co)
Answer:
Carbon (c) !!!! :)))))
Carbon (C) is the name and symbol of the element in the second row and fourteenth column of the periodic table , therefore option (b) is correct.
What do you mean the columns in periodic table ?The columns on the periodic table of elements are called groups. The elements in a group share the same configuration of valence electrons, which gives the elements similar chemical properties.
Properties of carbon element-
Carbon makes 4 electrons to form a covalent bondCarbon is highly unreactive under conditions that are normal.This chemical element is represented with the symbol C.It contains 6 protons in the nucleus and thus has the atomic number 6.Carbon (C) is the name and symbol of the element in the second row and fourteenth column of the periodic table , hence option (b) is correct among all.
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Why do some transition metals have multiple oxidation states? Transition metals have multiple oxidation states because of their sublevel.
Answer:
because it contain 5 d-orbitals.
Explanation:
unlike alkali and alkaline earth metals, transition metals have 5d-orbitals. electrons are around the nucleus some are away and some are close to it. Electrons change their energy levels at suitable conditions and as transition metals having 5-d orbitals so its electrons can easily goes to other transition state thus causing multiple oxidation states.
Answer:
partially filled d sublevels
Explanation:
calculate the mass of one atom of nitrogen.
Answer:
For instance look at N (Nitrogen), you will see the atomic mass is 14.00674 grams. So that means if you had 1 mole of nitrogen atoms, it would weight, 14.00674 grams. Now we have to get what fraction of a mole you have. To start, you need know that all a mole means is you have 6.022 x 1023 atoms of that type.
HOPE THIS HELPED!!!!!!!!!!!!!!!!XDDDDDDDD
The mass of one atom of nitrogen is approximately 2.325 × 10⁻²⁶ kg.
To calculate the mass of one atom of nitrogen, we need the atomic mass and Avogadro's number. The atomic mass of nitrogen (N) is approximately 14.01 atomic mass units (amu).
First, convert the atomic mass to kilograms:
14.01 amu × 1.66053906660 × 10⁻²⁷ kg/amu = 2.325 × 10⁻²⁶ kg
Next, we use Avogadro's number to find the mass of one mole of nitrogen atoms. Avogadro's number is 6.022 × 10²³ atoms/mol.
Mass of one mole of nitrogen atoms = 14.01 g/mol
Convert grams to kilograms for consistency:
14.01 g/mol × 10⁻³ kg/g = 0.01401 kg/mol
The mass of one nitrogen atom is then:
0.01401 kg/mol ÷ 6.022 × 10²³ atoms/mol ≈ 2.325 × 10⁻²⁶ kg/atom
Thus, the mass of one nitrogen atom is approximately 2.325 × 10⁻²⁶ kg.
Calculate the percent errorin a length measurementof 4.45cm if the correct value is 4.06
Answer:
9.61 % error
Explanation:
The formula for percent error is as follows:
% error = (experimental value - theoretical value) ÷ theoretical value × 100%
So to calculate the percent error all you have to you is plug in your values.
% error = (4.45cm - 4.06cm)/4.06 × 100%
= 0.39/4.06 × 100%
= 0.0961 × 100%
= 9.61 % error
Organize the following terms into a logical concept
map: state, physical properties, virtually incompress-
ible, solid, gas, liquid, tightly packed particles, com-
pressible, incompressible, particles far apart, loosely
packed particles
Answer:
Explanation:
1. State
2. Physical properties
3. Solid 4. liquid 5. gas.
6. incompressible 7. virtually incompressible 8. compressible
9. tightly packed 10. loosely packed particles 11. particles far apart
particles
The concept map briefly shows the different states of matter and their physical properties. Matter is anything that has weight and occupies space. There are 3 states of matter which are solid, liquid and gas.
The terms are organized based on the three states of matter: solid, liquid, and gas. Solids and liquids are incompressible and have tightly or loosely packed particles respectively while gas is compressible with particles far apart.
Explanation:The terms can be organized into a concept map that focuses on the three states of matter and their respective physical properties.
Solid: characterized by its incompressible nature and tightly packed particles. Liquid: also incompressible, but has loosely packed particles compared to a solid. Gas: distinguished by its compressible property and particles far apart.
The term 'virtually incompressible' would typically be used to describe liquids and solids, as while they are not absolutely incompressible, they are so relative to gases.
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The bottom number on each element on the Periodic Table is called
Answer:
The bottom number on each element of the periodic table are called the 4f series or lanthanoids and 5f or actanoids. They are also called inner transition elements.
Choose all the answers that apply. Light _____. slows down when traveling through more dense substances does not require a medium to travel through can be absorbed and transformed into heat speeds up when traveling through less dense substances is refracted when it changes direction and speed travels in longitudinal waves
Light slows down when traveling through more dense substances; does not require a medium to travel through; can be absorbed and transformed into heat; speeds up when traveling through less dense substances; is refracted when it changes direction and speed.
What is are the properties of light waves?Light wave is a form of electromagnetic wave which enables us to see.
It is a form of transverse wave form.
Some of the properties of light wave include:
it travels in straight linesit can be reflectedit can be refractedit can be polarizedTherefore, the correct options are, Light slows down when traveling through more dense substances; does not require a medium to travel through; can be absorbed and transformed into heat; speeds up when traveling through less dense substances; is refracted when it changes direction and speed.
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Light slows down when traveling through more dense substances; does not require a medium to travel through; can be absorbed and transformed into heat; speeds up when traveling through less dense substances; is refracted when it changes direction and speed.
What is are the properties of light waves?Light wave is a form of electromagnetic wave which enables us to see.
It is a form of transverse wave.
Some of the properties of light wave include:
it travels in straight linesit can be reflectedit can be refractedit can be polarizedTherefore, the correct options are,
Light slows down when traveling through more dense substances does not require a medium to travel throughcan be absorbed and transformed into heat speeds up when traveling through less dense substances is refracted when it changes direction and speed.Learn more light waves Here ;
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Why it is important for steel to go through a fluid phase as it is being produced
Final answer:
Steel production requires a fluid phase to allow the removal of impurities and the addition of alloying elements, producing steel with specific properties including enhanced strength and durability. The introduction of processes like the Bessemer and open-hearth methods facilitated cheaper and more efficient steelmaking. Controlled diffusion of carbon and other elements during the fluid phase is crucial to achieving the desired qualities of steel.
Explanation:
Steel production is a critical process in industrial manufacturing, transforming wrought iron into steel with superior strength and durability. Steel goes through a fluid phase during production because this allows for the removal of impurities and the integration of essential alloying elements. The Bessemer process and the open-hearth process both revolutionized steelmaking, enabling production at higher temperatures and larger quantities, thus reducing costs and facilitating widespread industrial use.
During the fluid phase, controlled amounts of carbon and other elements such as manganese, chromium, nickel, tungsten, molybdenum, and vanadium are added to create various steel alloys tailored for specific applications. The presence of carbon is particularly crucial; if not carefully managed, excess carbon can make steel brittle.
Diffusion plays an essential role in this process, particularly in carburizing, which increases the surface hardness of iron by allowing carbon to diffuse into it at high temperatures, turning it into hardened steel. This phase is vital for achieving the correct balance of mechanical properties required for steel's various industrial uses.
ASAP Making a mixture is a _______ change and, therefore, mixtures can be separated by _______ means.
chemical, chemical
physical, chemical
chemical, physical
physical, physical
Making a mixture is a physical change and, therefore, mixtures can be separated by physical means.
Answer: Option D
Explanation:
Mixtures are combination of two or more substances irrespective of their state of matter. The mixtures can be classified as solution, suspension and colloids. In mixtures , the combining substances will retain their chemical properties, they will combine only physically and not chemically.
So the chemical properties of the mixture will be the chemical properties of each of its constituent. As mixtures form by physical change of the combining substances, they can be separated by physical means only like distillation, evaporation etc.
Thus, making a mixture can be physically changed and therefore mixtures can be separated by physical means.
Helppp!!!! plz :-((
C: They should try to reproduce Dr. Maxwell's research to verify his results
Why?
Other scientists may or may not agree to Dr. Maxwell, so they should test Dr. Maxwell's research again to see if his conclusion is true or not.
Hope this helps!
Give two similarities between Be and Be2+
Answer:
Be2+ is a positively charged ion [cation] of Be. It is formed when Be donate the two electrons that are in its outermost shell. Be2+ is a charged ion. ... Be has 5 electrons while Be2+ has 3 electrons.
Explanation:
Answer: They have the same number of protons
They have the same number of neutrons
Explanation:
Considering Be and Be2+, two electrons were lost from the atom for the ion to be formed. The number of protons and the number of neutrons remain the same. Hence the atom and its ion share a similarity in the number of protons and neutrons present in both the atom and ion being exactly the same. This is a similarity between Be2+ and Be- the both possess the same number of neutrons and the both also posses the same number of protons.