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Q 2742023833.    

Assertion : The electron gain enthalpies have large negative values toward the upper right of the periodic table precedign the noble gases.

Reason : The effective nuclear charge increases from left to right across a period and consequently it will be easier to add an electron to a smaller atom since the added electron on an average would be closer to the positively charged nucleus.

A Both A and R individually true and R is the correct explanation of A
B Both A and R are individually true but R is not the correct explanation of A
C A is true but R is false
D A is false but R is true

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(Provided By a Student and Checked/Corrected by EXXAMM.com Team)

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