Question

use the periodic table to answer the following questions.
how many valence electrons does oxygen have?

Explanation:

Step1: Locate oxygen on periodic table

Oxygen (O) is in Group 16 (or Group VIA).

Step2: Relate group to valence electrons

For main group elements, group number (16) minus 10 gives valence electrons.
<Expression>
$16 - 10 = 6$
</Expression>

Answer:

6