Question

k3(Cu(CN)4) oxidation state of Cu

Answer 1

Oxidation states:

K----> +1

CN----> -1

Cu------> x

So the eqn becomes:

+3 + x - 4=0 (Because it is a neutral compoud)

x=1

So, the oxidation state of Cu is +1 in this compound.

Answer 2

Answer:

Hope this helps you .........................