Chapter 14, Problem 14.30E

Lithium hydride, ${}^{\text{7}}{\text{Li}}^{\text{1}}\text{H}$, is a potential fuel for fusion reactors because it is one of the few compounds of very small elements that exists as a solid, and is therefore more dense than gaseous fuels even under extreme conditions. $\text{LiH}$ in the gas phase has a pure rotational spectrum consisting of lines spaced by $15.026{\text{cm}}^{-1}$. Calculate the bond distance in $\text{LiH}$.