Which of the following are iso-electronic species? Na^+, K^+, Mg^2+, Ca^2+, S^2-, Ar.
Which of the following are iso-electronic species?
Na+, K+, Mg2+, Ca2+, S2-, Ar.
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Na+ and Mg2+ are iso-electrons species (have 10 electrons)
K+, Ca2+, S2- are iso-electronic species (have 18 electrons).
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