Given below are two statements: Statement-I: Since fluorine is more electronegative than nitrogen, the net dipole moment of NF 3 is greater than NH 3 . Statement-II: In NH 3 , the orbital dipole due to lone pair and the dipole moment of NH bonds are in opposite direction, but in NF 3 the orbital dipole due to lone pair and dipole moments of N-F bonds are in same direction. In the light of the above statements. Choose

Step-by-step solution

The lone pair of nitrogen opposes the dipole moment of NF 3 while it is added to the dipole moment of NH 3 In NH 3 Hydrogen is less electronegative than nitrogen, so all the electrons will move towards nitrogen. Due to this, all the vectors will be in the same direction and the summation will come to maximum. In NF 3 Fluorine is more electronegative than nitrogen, so all the electrons will move towards fluorine. Due to this, all the vectors will cancel each other and the summation will come to a minimum. In NH 3 ,