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In PH2F3, how many bond angles are smaller than 120 deg?
- 1
- 2
- 3
- 4
Correct answer: 4
Solution
In trigonal bipyramidal PH2F3 the two F occupy axial sites and the angles between each axial F and the equatorial atoms are 90 deg; there are four such axial-equatorial angles less than 120 deg.
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