Question

use the M.O theory, explain why Be2 molecule does not exist?​

Answer 1

Be2 is unstable and does not exist in nature as it has zero bond order.

The electronic configuration of Be2 is ( s 1s)2 ( s *1s)2 ( s 2s)2 ( s *2s)2.

Each Beryllium has 4 electrons, and two orbitals.Combining two Beryllium atoms would result in a total of four orbitals and eight electrons.Each 1s orbital would combine with the other 1s orbital corresponding to the other Beryllium. Likewise the 2s orbitals would combine.Each would form a bond and an anti-bond.Thus having two bonds and two anti-bonds, you would fill in the eight electrons, knowing that there are a maximum of two for each orbital.All orbitals are filled, which means that there is as much anti-bonding as there is bonding interactions between the two.

Answer 2

Answer:

Be2 is unstable and does not exist in nature as it has zero bond order

Explanation: