1.

Statement I :The basicity of lanthanides decreases . Statement II : The regular decreasein ionicradiiis lanthanide contraction.

Answer»

bothassertionand reasonare truereasonis thecorrectexplanationof THEASSERTION .
bothassertinandreasonare truebutreasonis notcorrectexplanationof theassertion
Assertionis truebutreasonis FALSE
Bothassertionand reasonare false.

Answer :B


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