4.Chemical Bonding and Molecular Structure
easy

${O}_{2}^{-}$ આયનનો બંધ ક્રમાંક અને ચુંબકીય વર્તણૂક અનુક્રમે છે:

A

$1.5$ અને પેરામેગ્નેટિક

B

$1.5$ અને ડાયમેગ્નેટિક

C

$2$ અને ડાયમેગ્નેટિક

D

$1$ અને પેરામેગ્નેટિક

(JEE MAIN-2021)

Solution

${O}_{2}^{-}=\left(\sigma_{1 {~s}}\right)^{2}\left(\sigma_{1 {~s}}^{*}\right)^{2}\left(\sigma_{2 {~s}}\right)^{2}\left(\sigma_{2 {~s}}^{*}\right)^{2}\left(\sigma_{2 {p}_{{z}}}\right)^{2}$

$\left(\pi_{2 {p}_{{x}}}^{2}=\pi_{2 {p}_{{y}}}^{2}\right)\left(\pi_{2 {p}_{{x}}}^{*_{2}}=\pi_{2 {p}_{{y}}}^{*_{1}}\right)$

$\text { Bond order }=\frac{10-7}{2}=1.5$

and paramagnetic

Standard 11
Chemistry

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