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Which of the following is//are incorrect statement(s) for phosphine ?A. It is less basic then `NH_(3)`.B. It is less poisonous then `NH_(3)`.C. The solution of `PH_(3)` in water does not decompose.D. Phosphine on heating at `150^(circ)C` "burns forming" `H_(3)PO_(4)`. |
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Answer» Correct Answer - B,C (A) In `PH_(3)` the lone pair of electrons is present in sepherical non directional more concentrated s-orbital where as lone pair of electrons is present in dirctional `sp^(3)` hybrid orbital. As a result, the ease of donation of lone pair of electron is more in `NH_(3)` as compare to `PH_(3)`. (B) It is incorrect statement. (C ) The solution of `PH_(3)` in water decomposes in presence of light giving red phosphorus and `H_(2)`. (D) `PH_(3)+2O_(2)to H_(3)PO_(4)` is correct statement `(PH_(3) lt NH_(3)) NH_(3)` is more basic thaen `PH_(3)`. |
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