From the given set of species, point out the species from each set having highest `Z_(eff)`
(a) `O^(2-),F^(-), Na^(+)` (b) `Li, Be, Na` (c ) `He, Li^(+), H^(-)`
A. `{:(a,b,c),(Na^(+),Be,Li^(+)):}`
B. `{:(a,b,c),(O^(2-),Li,H^(-)):}`
C. `{:(a,b,c),(F^(-),Na,He):}`
D. `{:(a,b,c),(Na^(+),Be,He):}`

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1 Answers

Correct Answer - A
For isoelectronic species, as `Z` increases, `Z_(eff)` increases (and vice versa).

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