Question

why is valency of magnesium is 2​

Answer 1

Explanation:

Magnesium has valency equal to 2 + because the electronic configuration of Mg is [2,8,2]. The nearest noble gas to magnesium is neon with electronic configuration of [2,8], to achieve this stable electronic configuration Mg can lose 2 valence electrons, hence its valency is 2 + .

Answer 2

Required Answer:

☑ Magnesium has valency equal to 2 + because the electronic configuration of Mg is [2,8,2].

☑ The nearest noble gas to magnesium is neon with electronic configuration of [2,8], to achieve this stable electronic configuration Mg can lose 2 valence electrons, hence its valency is 2 +.