Question

Assertion : B₂ molecule is diamagnetic. 

Reason : The highest occupied molecular orbital is of σ type.

(a) Both A and R are true and R is the correct explanation of A

(b) Both A and R are true but R is not correct explanation of A

(c) A is true but R is false

(d) A and R are false

Answer 1

Correct option  (d) A and R are false

Explanation:

In 82, total number of electrons = 10

Presence of unpaired electron shows the paramagnetic nature.

The highest occupied molecular orbital is of π type.