Question

Which element has?

The electronic configuration $2,8,2$?

Answer 1

Magnesium:

• Magnesium is a chemical element with the atomic number $12$ and an atomic symbol $\mathrm{Mg}$.
• It belongs to Group-$2$ i.e. alkaline earth metals.

Electronic configuration of Magnesium:

• The electronic configuration of Magnesium is $1s^{2}2s^{2}2p^{6}3s^2$.
• The distribution of electrons per shell is $2,8,2$.