1.

Assertion A: In the modern periodic table, metallic character of elements increases on moving down the group. Reason R: In the modern periodic table, the elements are arranged in order of their increasing atomic masses.

Answer»

Assertion A and REASON R are TRUE, and reason R is the correct EXPLANATION of assertion A.
Assertion A and reason R are true, but reason R is not the correct explanation of assertion A.
Assertion A is corret but reason R is FALSE.
Assertion A is false but reason R is true.

Answer :C


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