How ionic is the bond?

You will compare measured dipole moments of gas-phase molecules with the dipoles they would have if fully ionic.

The idea. A charge $e$ on each atom at a distance $d$ gives $\mu = e \times d$. Divide by $3.336 \times 10^{-30}$ C m to get debye. The percent ionic character is the measured dipole over that, times 100.

Your tasks.

1. In full_dipole, return the fully ionic dipole in debye for a bond length in pm.
2. In percent_ionic, return the percent ionic character.
3. In most_ionic, return the name of the most ionic molecule in the table.