Question

Which of the following is valency of magnesium?

4
3
2
1​

Answer 1

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 + .

Answer 2

2

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