JEE Advanced 2010 Chemistry question
Based on VSEPR theory, the number of 90 degree F–Br–F angles in is
Answer: 0
Solution
In the central Br has 7 valence electrons; 5 are used in bonding with F and 2 remain as one lone pair. With 5 bond pairs and 1 lone pair (octahedral electron geometry, ) the molecule is square pyramidal. According to VSEPR theory lone pair–bond pair repulsion is greater than bond pair–bond
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