Question

Which of the following compound is polar? PCl3F2 PCl5 BF3 PCl2F3

Answer 1

Answer:

The compounds PF

3

Cl

2

and PF

2

Cl

3

appear to have a basic trigonal bipyramid structure, F atoms in PF

2

Cl

3

assume axile positions, while in PF

3

Cl

2

. The structure is C

2v

, in which there are one equatarial and two axial F atoms.

This gives rise to stronger equatarial than axial bonds.

Thus dipole moment cancles out in PCl

3

F

2

, whereas it is non-zero in PCl

2

F

3

.

Answer 2

Answer:

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