Which one of the following forms with an excess of CN⁻ (cyanide) a complex

Which one of the following forms with an excess of CN⁻ (cyanide) a complex having coordination number two

Options

(a) Cu⁺
(b) Ag⁺
(c) Ni²⁺
(d) Fe²⁺

Correct Answer:

Ag⁺

Explanation:

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