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Which is the correct order of dipole mo...

Which is the correct order of dipole moments of `BF_(3),NF_(3)and NH_(3)`?

A

`NH_(3) gt BF_(3) gt NF_(3)`

B

`BF_(3) gt NF_(3) gt NH_(3)`

C

`NH_(3) gt NF_(3) gt BF_(3)`

D

`NF_(3) gt NH_(3) gt BF_(3)`

Text Solution

Verified by Experts

The correct Answer is:
C

Zero dipole moment

F is more electronegative than H. Hence, all electrons actumulate at F resulting decrease in dipole moment .
`NH _(3) gt NF_(3) gt BF_(3)`
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