Question

What is the bond order of Be₂ molecule?

विकल्प

• One

• Two

• Three

• Zero

Answer 1

Zero

Explanation:

For Be₂ molecule:

(Atomic number of Be = 4)

Molecular orbital Configuration: ${\displaystyle {\sigma }_{1{\text{s}}^2} {\sigma }_{1{\text{s}}^2}^{\cdot } {\sigma }_{2{\text{s}}^2} {\sigma }_{2{\text{s}}^2}^{\cdot }}$

Bond order = ${\displaystyle \frac{\text{Bonding electrons}-\text{Antibonding electrons}}{2}}$

${\displaystyle =\frac{4-4}{2}}$ = 0