Question

The atomic number of magnesium is 12. What is its valency?

• A. 1
• B. 2
• C. 3
• D. 4 \bigskip

Hint:

Valency is determined by the number of electrons lost, gained, or shared to achieve stability.

Answer 1

The Correct Option is B

Magnesium has an atomic number of 12, meaning its electronic configuration is 2,8,2. It donates two electrons to achieve a stable noble gas configuration, making its valency 2.