What is the number of valence electrons in magnesium?

1 Answer
Oct 13, 2016

Magnesium has 2 valance electrons.

Explanation:

The electron configuration of Magnesium is 1s^2 2s^2p^6 3s^2

The 1s^2 2s^2 2p^6 is the electron configuration of Neon Ne_10

This first 10 electrons are in a stable configuration leaving only 2 valance electrons. the 3s^2 electrons.

So the charge on Magnesium as an ion is usually +2 wen it loses the two 3s^2 electrons.