The Structure of the Atom Answers

Use the drop-down menus to describe the charges of the subatomic particles.Protons have a charge.

have a 0 charge.

Electrons have a charge.

In an electrically neutral atom, the number of

Using the drop-down menus, complete the table to summarize the properties of the different subatomic particles. A

A =

Atoms of which element contain 25 protons?

How many electrons are in an atom of elemental sodium?

Make a He atom with a mass of 4. How many protons did you put in the nucleus?

Which region is indicated by label B?

Use the periodic table to determine which of the following could be an isotope of bromine (Br). Check all that apply.

B

B =

Which element has an atomic number of 16?

Make a Li atom with a mass number of 7. How many electrons did you place in the outermost orbital (ring)?

Which region is indicated by label A?

Use the periodic table to determine which of the following could be an isotope of indium (In). Check all that apply.

C

C =

Make a N atom with a mass number of 14. How many neutrons are in the nucleus?