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InterviewSolution
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Which of the following has least covalent `P-H` bondA. `PH_(4)^(+)`B. `P_(2)H_(5)^(+)`C. `P_(2)H_(6)^(2+)`D. `PH_(3)` |
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Answer» Correct Answer - 3 the covalent charter of `P-H` bond depends on the formal charge distributed on each `P-H` bond In `PH_(4)^(+)` it is `+1//4=+0.25,` in `P_(2)H_(5)^(+)` it is `+1//5=+0.2` and in `P_(2)H_(6)^(2+)` it is `+2//6=+0.33`. The higher the formal charge the lesser the covalent character due to more polarisation .Thus the least covalent `P-H` bond is present in `P_(2)H_(6)^(2+)`. |
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