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Assertion : The radius of the first orbit of hydrogen atom is0.529Å Reason : NF_(3)ionizesto giveF^(-1) ions in aqueoussolution.

Answer»

Assertionis correct, reason is correct, reason is a correct explanation for ASSERTION.
Assertionis correct, reason is correct, reasonis not a correct explanation for assertion
Assertionis correct, reasonis incorrect
Assertion is incorrect, reasonis correct.

SOLUTION :It is correct statement that `NF_(3)` isaweaker ligand than `N(CH_(3))_(3)`, the reason is that fluorine is HIGHLY electro negative therefore, it with draw electrons from nitroge natom. Hence,thelone pair of nitrogen ATOM cannot beligated.While `N(CH_(3))_(3)` is a strong ligand because `CH_(3)` is electron releasing GROUP.


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