Which one of the following species does not e | vedclass

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Question

Be $_{2}$ does not exist.

$\mathrm{Be}_{2}$ has an electronic configuration of:

$\sigma 1 s^{2} \sigma^{*} 1 s^{2} \sigma 2 s^{2} \sigma^{*} 2 s

Vedclass · Accepted Answer

$Be_2$

Vedclass · Answer

Be $_{2}$ does not exist.

$\mathrm{Be}_{2}$ has an electronic configuration of:

$\sigma 1 s^{2} \sigma^{*} 1 s^{2} \sigma 2 s^{2} \sigma^{*} 2 s^{2}$

$	ext { Bond order }=\frac{4-4}{2}=0$

Thus, Be $_{2}$ does not exist.

Which one of the following species does not exist under normal conditions ?

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