Which of the Following Sets Are Isoelectronic (I

question 96

Multiple Choice

Which of the following sets are isoelectronic (i.e., have the same number of electrons) ?
i. Br^-, Kr, Sr²⁺
Ii. C, N^-, O^2-
Iii. Mg²⁺, Ca²⁺, Sr²⁺
Iv. O^2-, O, O²⁺
V. Ag⁺, Cd²⁺, Pd

• A) i and ii
• B) i and v
• C) i, iii and iv
• D) ii, iii and v
• E) i, iii iv and v

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