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Fluorine is more electronegative than either boron or phosphorus. What conclusion can be drawn from the fact that B F_{3} has no dipole moment but P F_{3} does

Option: 1

 B F_{3} is not spherically symmetrical but P F_{3}  is

Option: 2

 B F_{3} molecule must be linear

Option: 3

 The atomic radius of  P  is larger than the atomic radius of  B

Option: 4

 The  B F_{3} molecule must be planar triangular

Answers (1)


BF_3 molecule is Trigonal planar and as a result, the three polar BF bonds are arranged at an angle of 120^\circ which leads to a net zero dipole.

Hence, the correct answer is Option (4)

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