Question

Which of the following is diamagnetic $O_2,S_2,N_2,C_2$ ?

• A. $O_2,N_2$
• B. $O_2,S_2$
• C. $N_2,C_2$
• D. $S_2,C_2$

Answer 1

Answer: (C)

In $O_2$ molecule, 2 unpaired $e^{-1}$ s are present in ${}^{\ast }2p$ antibonding molecular of $O_2$ molecule and in $S_2$ unpaired electrons are present in ${}^{\ast }3p$ antibonding orbital : $O_2\&S_2$ are paramagnetic.