Screening effect is not observed in :
Screening effect is not observed in :
A. `He^(+)`
B. `Li^(2+)`
C. `Be^(3+)`
D. In all cases
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Correct Answer - D
`He^(+),1s^(1), Li^(2+), 1s^(1), Be^(3+), 1s^(1)`. All these ions have only one electron. So they do not have any inner orbital and thus do not experience any screening effect.
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