Question

what is the bond order of be2+​

Answer 1

Be2+ has a bond order of 0.5 and is slightly lower in energy than isolated Be atoms.

Answer 2

The bond order is 0.5.

Given: Given species is $Be_2^+$.

To find: We have to find its bond order.

Solution:

One Be atom has four electrons.

Thus the total number of electrons in $Be_2$ is 4+4=8.

The total number of electrons in $Be_2^+$ is 8-1=7.

Thus the electronic configuration will be-

${\sigma1s}^{2} {\sigma1s.}^{2} {\sigma2s}^{2} {\sigma2s.}^{1}$

Thus the total number of electrons in the bonding orbital is 4.

The total number of electrons in the antibonding orbital is 3.

Bond order will be-

$\frac{4 - 3}{2} \\ = 0.5$

The bond order is 0.5.