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Q.

Statement I: Phosphours cannot form PH5
Statement II : High ΔHa value of dihydrogen and ΔHeg value of hydrogen do not favour to exhibit the highest oxidation state of ‘P’.

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a

Statement I and Statement II are true.

b

Statement I is false and Statement II is true.

c

Statement I is true and  statement II is false.

d

Statement I and Statement II are false.

answer is A.

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Detailed Solution

PH5 can't exist in nature.
Reason: hydrogen is not sufficiently electronegative to excite the electron in phosphrous.
\thereforeStatement I and Statement II are true.

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Statement I: Phosphours cannot form PH5Statement II : High ΔHa value of dihydrogen and ΔHeg value of hydrogen do not favour to exhibit the highest oxidation state of ‘P’.