Question

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

• A. K⁺, Cl^–, Mg²⁺, Sc³⁺
• B. Na⁺, Mg⁺², Al³⁺, Cl
• C. K⁺, Ca²⁺, Sc³⁺, Cl^–
• D. Na⁺, Mg²⁺, Cl^–, Al³⁺

Answer 1

Answer: (C)

K⁺, Ca²⁺, Sc³⁺, Cl^–

Answer 2