Among the following species, the diamagnetic molecule is:

Step-by-step solution

(1) B 2 ( 10 ) ⇒ σ 1 s 2 ,   σ * 1 s 2 ,   σ 2 s 2 , σ * 2 s 2 , π 2 p x 1 = π 2 p y 1 , paramagnetic (2) N O 15 ⇒ σ 1 s 2 σ * 1 s 2 σ * 2 s 2 σ 2 p z 2 π 2 p x 2 = π 2 p y 2 = π * 2 p x 1 , paramagnetic (3) O 2 16 ⇒   σ 1 s 2 σ * 1 s 2 σ 2 s 2 σ * 2 p z 2 π 2 p x 2 = π 2 p y 2 π * 2 p x 1 = π * 2 p y , paramagnetic (4) C O 14 ⇒     σ 1 s 2 σ * 1 s 2 ,