Question

Sodium atom with electronic configuration 2, 8, 1 achieves stable electronic configuration by -------- one electron from its outer shell.

• A. loosing
• B. gaining
• C. covalency
• D. none

Answer 1

The correct option is A loosing

Sodium has unstable configuration $1s^{2}2s^2{p}^{6}3s^1$ and it achieves stable configuration by loosing one electron as $N{a}^{+}-1s^{2}2s^2{p}^6$