I think it’s a. 12
Explanation:if it’s wrong kill me
“Tell me if I’m right”
Because us humans haven’t explored every inch of the world yet, especially in the deepest parts of the ocean
Answer:
Argon
Explanation:
The element that has a complete valence electron shell is argon (Ar) since it is a noble gas in the last group on the periodic table. destinymitchell966
The answer is C because the key is “group that live in the same area”
