question_answer

                In which of the following molecules are all the bonds not equal?                                                              

A)                 \[Cl{{F}_{3}}\]

B)                 \[B{{F}_{3}}\]

C)                         \[Al{{F}_{3}}\]

D)                 \[N{{F}_{3}}\]

Correct Answer: A

Solution :

                          In \[Cl{{F}_{3}}\] all bonds are not equal due to trigonal - bipyramidal (\[s{{p}^{3}}d\]-hybridisation) geometry of \[Cl{{F}_{3}}\] molecule.                                 \[B{{F}_{3}}\] and \[Al{{F}_{3}}\] show trigonal   symmetric structure due to \[s{{p}^{2}}\]-hybridisation.                                 \[N{{F}_{3}}\] shows pyramidal geometry due to \[s{{p}^{3}}\] hybridisation.