Q.

Effective nuclear charges of  Li ,Li+,Li- in the following process are

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a

3,3,2

b

2,3,3

c

1.3 ,2.7 ,0.95

d

0.95, 0.95 ,2.7

answer is C.

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Detailed Solution

A) Li...1s22s1    σ=2(0.85)      =1.7   Zeff of Li = (3-1.7)                =1.3B) Li+...1s2    σ=1(0.3)      =0.3   Zeff of Li+ = 3-0.3                =2.7C) Li+...1s22s2    σ=1(0.35)+2(0.85)      =2.05   Zeff of Li- σ=3-2.05    =0.95
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