Statement-I: N-F bond is more polar than N-H bondStatement-II: NF3 is more polar than NH3

On Pauling scaleEN of F = 4.0 ; N = 3.0 ; H = 2.1 ;Difference in electronegativity in N - F is greater than in N - H bond.∴N -F bond is more polar than N - H bond.Dipole moment