Use molecular orbital theory to predict whether or not each of the following molecules or ions should exist in a relatively stable form.
H2 2 -
We’re being asked to predict whether or not H22- should exist in a relatively stable form
For this, we need to determine the bond order for each species. The bond order tells us the stability of a bond:
The higher the bond order, the more electrons holding the atoms together, and therefore the greater the stability
We will do the following steps to solve the problem:
Step 1: Calculate the total number of valence electrons present.
Step 2: Draw the molecular orbital diagram.
Step 3: Calculate the bond order of the molecule/ion.
Recall that the formula for bond order is: