Question

use molecular orbital theory to explain why the Be molecule does not exist​

Answer 1

Answer:

Explanation:

The electronic configuration of Beryllium is 1s2 2s2.

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

Answer:

A molecule is an electrically neutral group of two or more atoms held together by chemical bonds.