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The formation constant* of [M(CN) 4 4 ]2− is 7.70 × 10 16 7.70×1016 , where M is a generic metal. A 0.180 0.180 mole quantity of M(NO3)2 is added to a liter of 1.180 1.180 M NaCN solution. What is the concentration of M2+ ions at equilibrium?