Which complex is most stable?

CHEMISTRY · Single correct · CBSE · Chemistry · Coordination Compounds · Coordination Compounds

Problem

Which complex is most stable? (1) [Cu(CN)2]−Kd=1×10−16[\text{Cu}(\text{CN})_2]^- K_d = 1 \times 10^{-16} (2) [Fe(CN)6]4−Kd=1×10−37[\text{Fe}(\text{CN})_6]^{4-} K_d = 1 \times 10^{-37} (3) [Fe(CN)6]3−Kd=1×10−44[\text{Fe}(\text{CN})_6]^{3-} K_d = 1 \times 10^{-44} (4) [Ag(CN)2]−Kd=1×10−20[\text{Ag}(\text{CN})_2]^- K_d = 1 \times 10^{-20}

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