1.

Assertion : PF_(3) is stronger lewis base than PH_(3). Reason : l.p. of P-atom in PF_(3) molecule is present in sp^(3)-hybrid orbital, whereas l.p. of P-atom in PH_(3) is present in almost pure s-orbital.

Answer»

If assertion is TRUE but the reason is FALSE
If assertion is false but reason is true
If both assertion and reason are true and the reason is the CORRECT explanation of assertion
If both assertion and reason are true and the reason is not the correct explanation of assertion

Answer :B


Discussion

No Comment Found