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Which one of the following sets of ions ...

Which one of the following sets of ions represents a collection of isoelectronic species?

A

`N^(3-),O^(2-),F^(-) ,S^(2-)`

B

`Li^(+),Na^(+),Mg^(2+),Ca^(2+)`

C

`K^(+),Cl^(-),Ca^(2+),Sc^(3+)`

D

`Ba^(2+),Sr^(2+),K^(+),Ca^(2+)`

Text Solution

Verified by Experts

The correct Answer is:
C
`K^(+) (19-1=18), Cl^(-) (17+1=18) , Ca^(2+) (20-2=18)` and `Sc^(3+) (21-3=18)` represents a collection of isoelectronic species.
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