Question

multiple - choice question
how many valence electrons are in group 2?
1 valence electron
8 valence electrons
2 valence electrons
12 valence electrons

Explanation:

In the periodic table, the group number for main - group elements often indicates the number of valence electrons. Elements in group 2 are alkaline - earth metals and have 2 valence electrons.

Answer:

C. 2 valence electrons