Question

Give the oxidation state, the charge of complex ion, the coordination number of the metal atom of the complex K[Ag(CN)2]

Answer 1

Solution:

$[Ag(CN)_2]$ charge = -1 to neutralise K+

Ag= +1

CN- = -1 so 2CN- = -2  

so +1 - 2= -1 the charge on the anion 

coordination number = 2