Question

Use molecular orbital theory to explain why the Be2 molecular does not exist​

Answer 1

Answer:

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Explanation:

From the electronic configuration it is clear that there is no singly filled atomic orbital present in beryllium. Without the half filled orbital,the overlapping is not possible ,therefore Be2 molecule does not exist.

Answer 2

Explanation:

Be2 has total 8 electrons

configuration:

sigma 1s2 sigma* 1s2 sigma 2s2 sigma* 2s2

no. of electrons in BMO=4

No. of electrons in ABMO=4

Bond order = (4 - 4)/2

= 0

Hence Be2 molecule doesn't exist