Question

Valency of Calcium element is:

• A. 2
• B. 3
• C. 4
• D. 5

Answer 1

The correct option is

A

2

Valency is the combining power of an element. Elements in the same group of the periodic table have the same valency. The valency of an element is related to how many electrons are in the outer shell.

Calcium is in group 2. The valency of a group 2 element is decided by the number of valence electrons. Here, the number of valence electrons in calcium is 2. Therefore, the valency is 2.