Chemical Bonding And Molecular Structure Ques 90
90. In $BrF_3$ molecule, the lone pairs occupy equatorial positions to minimize
(a) lone pair - bond pair repulsion only
(b) bond pair - bond pair repulsion only
(c) lone pair - lone pair repulsion and lone pair - bond pair repulsion
(d) lone pair - lone pair repulsion only
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Answer:
Correct Answer: 90.(c)
Solution:
(c) The possible structures are:
The first structure is minimizing the $l p-l p$ repulsion if we compare it with III. The same is minimizing the $l p-b p$ repulsions if we compare it with II. Also it can be noted that, I structure is not minimizing the $b p-b p$ repulsions.
BETA
