Which of These Is an Isoelectronic Series

question 81

Multiple Choice

Which of these is an isoelectronic series?

• A)Na⁺,K⁺,Rb⁺,Cs⁺
• B)K⁺,Ca²⁺,Ar,S^2-
• C)Na⁺,Mg²⁺,S^2-,Cl^-
• D)Li,Be,B,C
• E)none of these (A-D)

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