If the% s-character in one $\mathrm{Sb}-\mathrm{H}$ bond of $Sb{H}_3$ is 1.0%, what is %p-character in the orbital occupied by its lone pair?

The % s-character in one Sb-H bond in ${\displaystyle Sb{H}_3}$ is 1.0%.

Here, the % p-character in the orbital occupied by its lone pair is 3%.

Hence correct option is D.