Statement I: B₂ molecule is paramagnetic.
Statement II : It has 2 unpaired electrons in its antibonding molecular orbitals.

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Statement I and Statement II are true.

Statement I is false and Statement II is true.

Statement I is true and statement II is false.

Statement I and Statement II are false.

answer is B.

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Detailed Solution

$B_{2} - {(σ_{1 s})}^{2} {(σ_{1 s}^{*})}^{2} {(σ_{2 s})}^{2} {(σ_{2 s}^{*})}^{2} {(π_{2 p_{x}})}^{1} = {(π_{2 p_{y}})}^{1}$
$B . O = \frac{6 - 4}{2} = 1$

B₂ is paramagnetic with two unpaired electrons in pi BMO
$∴$ I is true & II is Flase

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