In BI3 molecule distance between two I atoms is found to be 3.54˚A. Also, BI3 has sp2-hybridized boron atom. If radius of covalently bonded I atom is 1.33, the covalent radius of born will be X˚A. Find value of 100X ?
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Solution
The B-I bond length is X+1.33A0 The I-I bond length is 3.54 A0. 2×(X+1.33)×sin60=3.54. X=0.71 100X=71.