1.

Statement-1. Lanthanoids showa limited number of oxidation states whereas actinoids show a large number of oxidation states. Statement-2. Energy gap between4f, 5d and 6s subshells is small whereas that between 5f, 6d and 7s subshells is large.

Answer»

Statement-1 is True, Statement-2 is True, Statement-2 is a correct explanation of Statement -1
Statement-1 is True, Statement-2 is True, Statement-2 is NOT a correctexplanation of Statement-1
Statement-1 is True, Statement-2 is false
Statement-1 is False, Statement-2is True

Solution :Statement-2. is False because energy gap beween 4f, 5d and 6s is large WHEREAS that between 5F, 6dand 7s is SMALL.


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