The bond lengths of diatomic molecules of elements $\mathrm{X}, \mathrm{Y}$ and Z respectively are 143,110…
The bond lengths of diatomic molecules of elements $\mathrm{X}, \mathrm{Y}$ and Z respectively are 143,110 and 121 pm . The atomic numbers of X . Y and Z respectively are:
$9,7,8$
$7,8,9$
$9,8,7$
$7,9,8$
Solution
We know that
Bond order $\propto \frac{1}{\text { Bond Length }}$
Bond order of a diatomic increases it bonds length will be decrease
