Why is the normal boiling point of hydrogen fluoride is so much higher than that of hydrogen chloride, the hydride of the next element in group VIIA?
A the electron cloud in the HF molecule is more easily polarized than that in HCl
B HCl molecules are non-polar
C the HF molecules have a lower dipole moment
D chlorine in HCl is more electronegative that fluorine in HF
E the HF molecules undergoes a higher degree of hydrogen bonding than HCl