Question

use the shell model to answer the next question
shell model

1. which element does the shell model represent (on the next page)

a carbon 12 0107
b fluorine 18 9984
c magnesium 24 3050
d sodium 22 9898
use your periodic table for the following questions 31 - 33

1. a neutral atom of oxygen has

a. 16 electrons
b. 8 electrons
c. 16 protons
d. 16 neutrons

Explanation:

Step1: Identify element in shell - model

Count protons in shell - model. Sodium has 11 protons.

Step2: Determine electrons in oxygen

In a neutral atom, number of electrons = number of protons. Oxygen has 8 protons, so 8 electrons.

Answer:

1. D. Sodium
2. b. 8 electrons