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Q.

In the calculation of screening constant for the valence electron of Na and Mg the total contribution of all the (n-1) shell electrons are respectively X and Y . Relation between X and Y is 

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a

X = Y

b

X > Y

c

X = Y

d

X < Y

answer is C.

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Detailed Solution

Both Na and Mg contains total of 8 electrons in (n-1) shell. Total contribution is same for both X = Y

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