Question

All elements in $\text{IIIA}$ group, have:

• A. an atomic number 3
• B. 3 complete sub-shell
• C. 3 valence electrons
• D. 3 electrons less than the octet

Answer 1

Answer: (C)

3 valence electrons

Answer 2

The general electronic configuration of III A group elements, is $n{{s}^{2}}n{{p}^{1}},$ i.e., there are 3-valence-shell electrons in each elements atom of group III A.