question_answer

In \[B{{F}_{3'}}\] the  bond length is 1.30\[\overset{{}^\circ }{\mathop{A}}\,\]. When \[B{{F}_{3}}\] is allowed to react with \[M{{e}_{3}}\]N, it forms an adduct, \[M{{e}_{3}}N\to B{{F}_{3}}\]. The bond length of  in the adduct is

A)  Greater than 1.30 \[\overset{{}^\circ }{\mathop{A}}\,\]

B)  Smaller than 1.30 \[\overset{{}^\circ }{\mathop{A}}\,\]

C)  Equal to 1.30 \[\overset{{}^\circ }{\mathop{A}}\,\]

D)  None of these.