InterviewSolution
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InterviewSolution
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Among the following the pair in which the two species are not isostuctural isA. `SiF_4` and `SF_4`B. `IO_3^(-)` and `XeO_3`C. `BH_4^(-)` and `BH_4^(+)`D. `PF_6^(-)` and `SF_6` |
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Answer» Correct Answer - A Isostructural here means identical shape and geometry. In `SiF_4`, the steric number of `Si` is `4` (four F atoms bonded + zero lone pair). Thus, `SiF_4` has tetrahedral shape and tetrahedral geometry. In `SF_4`, the steric number of `S` is `5` (four F atoms bonded + one lone pair). Thus, `SF_4` has trigonal bipyramidal geometry but seesaw shape. |
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