STATEMENT-1 : Shielding effect increases as we go down the group. STATEMENT-2 : With an increase in the number of electrons in the penultimate shell, shielding effect increases.
A
STATEMENT-1 is True, STATEMENT-2 is True; STATEMENT-2 is a correct explanation for STATEMENT-1
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B
STATEMENT-1 is True, STATEMENT-2 is True; STATEMENT-2 is NOT a correct explanation for STATEMENT-1
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C
STATEMENT-1 is True, STATEMENT-2 is False
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D
STATEMENT-1 is False, STATEMENT-2 is True
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Solution
The correct option is A STATEMENT-1 is True, STATEMENT-2 is True; STATEMENT-2 is a correct explanation for STATEMENT-1 As we go down the group, the shielding effect increases due to the increase in number of d electrons in the penultimate shell.