Question

What is the number of unpaired electrons present in O₂ molecule?

Options

• 0

• 2

• 3

• 1

Answer 1

2

Explanation:

Electronic configuration of O₂:

(σ1s)² (σ*1s)² (σ2s)² (σ*2s)² (σ2p_z)² (π2p_x)² (π2p_y)² (π*2p_x)¹ (π*2p_y)¹

It has two unpaired electrons.