1.

Assertion (A) : The first ionization energy of Al is lower than Mg.Reason (R ): Atomic radius of Al is smaller than Mg.

Answer»

Both (A) and (R) are true and R is CORRECT EXPLANATION of R
Both (A) and (R ) are true but R is not the correct explanation of A
(A) is true R is FALSE
Both (A) and (R ) are false .

Answer :b


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