A) \[N{{H}_{3}}\]
B) \[B{{F}_{3}}\]
C) \[N{{H}_{3}}\to B{{F}_{3}}\]
D) None of these
Correct Answer: A
Solution :
According to Lewis concept, Lewis base is electron pair donor and Lewis acid is electron pair acceptor. Hence,\[N{{H}_{3}}\]behaves as Lewis base and\[B{{F}_{3}}\]as Lewis acid. \[\underset{donor}{\mathop{{{H}_{3}}N_{\bullet }^{\bullet }}}\,+\underset{acceptor}{\mathop{B{{F}_{3}}}}\,\xrightarrow[{}]{{}}{{H}_{3}}N\xrightarrow[{}]{{}}B{{F}_{3}}\]
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