A) \[N{{F}_{3}}\]
B) \[NC{{l}_{3}}\]
C) \[NB{{r}_{3}}\]
D) \[N{{H}_{3}}\]
Correct Answer: A
Solution :
Nitrogen form trihalides of the formula\[N{{X}_{3}}\]. Among halides of nitrogen, \[N{{F}_{3}}\] is extremely stable due to strong \[N-F\] bond in\[N{{F}_{3}}\]. Small size of both nitrogen and fluorine atom causes strongness of \[N-F\] bond. \[NC{{l}_{3}}\] is explosive yellow oil \[NB{{r}_{3}}\] and \[N{{I}_{3}}\] are unstable compound and known only as ammonia complex\[e.q.,\,\,NB{{r}_{3}}\text{-}6N{{H}_{3}}\].
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