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4.Chemical Bonding and Molecular Structure
medium
The paramagnetic molecule at ground state among the following is
A
${H_2}$
B
${O_2}$
C
${N_2}$
D
$CO$
Solution
(b) So two unpaired electron found in $O_2$ at ground stage by which it shows paramagnetism.
${O_2} \to {(\sigma 1s)^2}{({\sigma ^*}1s)^2}{(\sigma 2s)^2}{({\sigma ^*}2s)^2}{({\sigma ^*}2p_z)^2}$
$(\pi 2p_x^2 \equiv \pi 2p_y^2)\;({\pi ^*}2p_x^1 \equiv {\pi ^*}2p_y^1)$
Standard 11
Chemistry
