Statement I : Since electronegativity of F > H, so dipole moment of NF3 > NH3.

Question

Consider the following statements. 

Statement I : Since electronegativity of F > H, so dipole moment of NF₃ > NH₃.

Statement II : Lone pair dipole in NH3 is not in the direction of resultant bond dipole while in case of NF₃ the lone pair dipole is in the direction of resultant bond dipole. 

(1) SI : True

SII : False

(2) SI : True

SII : True

(3) SI : False

SII : False

(4) SI : False

SII : True

Answer 1

The correct option is (3) SI : False; SII : False

Dipole moment of NH₃ > NF₃ because in case of NH₃ the lone pair dipole is in the direction of resultant bond dipole.