Which one of the following sets of ions represents a collection of iso

1.	Which one of the following sets of ions represents a collection of isoelectronic species?
Answer» `Ba^(+2), Sr^(+2), K^(+), CA^(+2)` `N^(-3), O^(-2), F^(-1), S^(-2)` `Li^(+), NA^(+), Mg^(+2), Ca^(+2)` `K^(+), CL^(-1), Ca^(+2), Sc^(+3)` Answer :d

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