The dipole moment of HBr is 1.6×10^-30 cm and inter – atomic spacing is 1 $\stackrel{\mathrm{o}}{\mathrm{A}}$. The % ionic character of HBr is

Charge of e^-=1.6×10^-19
Dipole moment of HBr = 1.6 ×10^-30
Inter-atomic spacing  = 1 Å    =1×10^-10  m
Percentage of ionic character in HBr