question_answer

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 [Pb. PMT 1998]

A)                 \[B{{F}_{3}}\]is not spherically symmetrical but \[P{{F}_{3}}\] is

B)                 \[B{{F}_{3}}\]molecule must be linear

C)                 The atomic radius of \[P\] is larger than the atomic radius of \[B\]

D)                 The \[B{{F}_{3}}\] molecule must be planar triangular