question_answer

Arrange the group 15 hydrides in the increasing order of H-M-H bond angle.

A) \[Sb{{H}_{3}}<As{{H}_{3}}<P{{H}_{3}}<N{{H}_{3}}\]

B) \[N{{H}_{3}}<P{{H}_{3}}<As{{H}_{3}}<Sb{{H}_{3}}\]

C) \[N{{H}_{3}}<Sb{{H}_{3}}<As{{H}_{3}}<P{{H}_{3}}\]

D) \[N{{H}_{3}}<P{{H}_{3}}<Sb{{H}_{3}}<As{{H}_{3}}\]

Correct Answer: A

Solution :

[a] Bond angle of group 15 hydrides is in order of