Consider the following depictions of two atoms, which have been greatly enlarged

Question

Consider the following depictions of two atoms, which have been greatly enlarged so you can see the subatomic particles.

Atom A: 3 protons, 4 neutrons, 3 electrons
Atom B: 3 protons, 3 neutrons, 3 electrons

a. How many protons are present in atom A?

b. What is the significance of the number of protons depicted in atom A or any atom?

c. Can you identify the real element represented by the drawing of atom A? If so, what element does it represent?

d. What is the charge on element A? Explain how you arrived at your answer.

e. Write the nuclide symbol of atom A.

f. Write the atomic symbol and the atomic number of atom B.

g. What is the mass number of atom B? How does this mass number compare with that of atom A?

h. What is the charge on atom B?

i. Write the nuclide symbol of element B.

j. Draw pictures like those above of 63Li+ and 63Li? atoms. What are the mass number and atomic number of each of these atoms?

k. Consider the two atoms depicted in this problem and the two that you just drew. What is the total number of lithium isotopes depicted? How did you make your decision?

l. Is the mass number of an isotope of an atom equal to the mass of the isotope of the atom? Be sure to explain your answer.

Explanation / Answer

3 3 li 0 li

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