Respuesta :
Answer:
B. 3
Explanation:
A valence electron are always in the final outer shell, so it's always the last number.
Answer:
A.2
Explanation:i remember from learning if i am not remembering wrong
Answer:
B. 3
Explanation:
A valence electron are always in the final outer shell, so it's always the last number.
Answer:
A.2
Explanation:i remember from learning if i am not remembering wrong