Which one of the following species is diamagn | vedclass

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Question

(b) $\begin{array}{*{20}{c}}{}&{He_2^ + }&{{H_2}}&{H_2^ + }&{H_2^ - }\{\sigma (1s)}&{\underline { \uparrow \downarrow } }&{\u

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$H_2$

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(b) $\begin{array}{*{20}{c}}{}&{He_2^ + }&{{H_2}}&{H_2^ + }&{H_2^ - }\{\sigma (1s)}&{\underline { \uparrow \downarrow } }&{\underline { \uparrow \downarrow } }&{\underline { \uparrow \,} }&{\underline { \uparrow \downarrow } }\{\mathop \sigma \limits^* (1s)}&{\underline { \uparrow \,} }&{\underline {\,\,\,\,} }&{\underline {\,\,\,\,} }&{\underline { \uparrow \,} }\{B.O.}&{\frac{1}{2}}&1&{\frac{1}{2}}&{\frac{1}{2}}\\begin{array}{l}{m{Magnetic}}\{m{nature}}\end{array}&{m{P}}&{m{D}}&{m{P}}&{m{P}}\end{array}$

$(P =$ Paramagnetic, $D =$ Diamagnetic$)$

Which one of the following species is diamagnetic in nature

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