Assertion(A): In modern periodic table ionization enthalpy decreases of group 1 by going down group Reason(R): Screening effect increases by going down in a group

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Both A and R are true

A is true R is false

A is False R is true

Both A and R are false

answer is A.

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Detailed Solution

Down the group number of shells increases screening effect increases ionization enthalpy decreases

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