Atomic Structure Study Guide

1. 1. Atoms of the elements in the same group of the Periodic Table share the same

• number of valence electrons

• number of energy levels

• atomic numbers

• atomic masses

2. 2. What is an atom's nucleus made of?

• protons and electrons

• protons only

• protons and neutrons

• neutrons only

3. 3. How many electrons will a neutral atom of carbon have if its nucleus has 6 protons and 8 neutrons?

• 2

• 6

• 8

• 14

4. 4. An element with 5 protons, 6 neutrons, and 8 electrons has an atomic number of

• 5

• 6

• 8

• 11

4. 5. An element with 5 protons, 6 neutrons, and 8 electrons has mass number of

• 5

• 6

• 8

• 11

6. 6. The farther an electron is from the nucleus, the more _________ it has.

• charge

• energy

• mass

• size

7. 7. Atoms of the same element that have different numbers of neutrons are called _______.

• isotopes

• protons

• ions

• molecules

8. 8. The total number of electrons in the outer shell of a sodium atom is ____.

• 1

• 2

• 8

• 18

9. 9. Which particles determine the atomic number of an element?

• protons only

• neutrons and protons

• neutrons only

• protons and electrons

10. 10. The total number of neutrons in the nucleus of any atom is equal to the

• mass number of the atom

• atomic number of the atom

• atomic number minus the mass number

• mass number minus the atomic number