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Q.

Option in which shielding constant (According to Slater's rule) is 0.85 by each electron in all inner shell(s):

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a

for outer most electron of Li

b

both (a) and (b)

c

none of the above

d

for outer most electron of Na

answer is A.

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Detailed Solution

Li→1s22s1 Li3→1s2, 2s1

σ=0.85×2=1.7

Na11→1s22s22p63s               1I       0.05I

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