Which one of the following groupings represents a collection of isoelectronic species?

(At. numbers : Cs-55, Br-35)

A.

Na⁺, Ca²⁺, Mg²⁺

B.

N^3-, F^-, Na⁺

C.

Be, Al³⁺, Cl^-

D.

Ca²⁺, Cs⁺, Br

Anonymous User Chemistry 29 Oct, 2020 61 views

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