Question

Assuming $2s-2p$ mixing is not operative, the paramagnetic species among the following is

• A. $Be_2$
• B. $B_2$
• C. $C_2$
• D. $N_2$

Answer 1

Answer: (C)

$C_2$

Answer 2

Assuming that no $2 s -2 p$ mixing takes place
(A) $Be _{2} \rightarrow \sigma s ^{2}, \sigma^{*} 1s ^{2}, \sigma 2 s ^{2}, \sigma * 2 s ^{2}$ (diamagnetic)