1.

NH_(3) is more polar than NF_(3) because _________.

Answer»

F is more electornegative than H
`NF_(3)` has three lone pairs on each F atom
the orbital dipole due to lone PAIR on N is in same direction as the resultant dipole moment of N-H bonds in `NH_(3)`
the orbital dipole due to lone pair on N is in opposite direction as the resultant dipole moment of N-H bonds in `NH_(3)`

ANSWER :C


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