Which of These Pairs Consists of Isoelectronic Species

question 108

Multiple Choice

Which of these pairs consists of isoelectronic species?

• A)Mn²⁺ and Ar
• B)Zn²⁺ and Cu²⁺
• C)Na⁺ and K⁺
• D)Cl^- and S
• E)K⁺ and Cl^-

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