I think +3 oxidation state
Cyanide ion is an anion. Nitrrogen atom shows -3 oxidation number.
Cyanide isn't on the periodic table, it is a polyatomic ion. Its symbol is CN and has a -1 oxidation state
Nitrogen's oxidation number is -4.Carbon's oxidation number is +3.The cyanide ion has -1 charge. Nitrogen is in -3 state. By balancing the charges: the oxidation number of carbon is +4.
CN- group has an overall charge of -1. C has oxidation of +2 and N -3 in CN since N has more negativity than C. In other words, N competes and wins with C when both try to take electrons to satisfy their need to become stable. Cheers.
O.S. of N = +3
N has +3 state on it.Each H have -1 state.
-3
The oxidation state of Hg in Hg2Cl2 is +1.It has +1 state.
Zero.for an element in the free state oxidation no is always zero.
-3
the oxidation number is from 0 to 3+
The oxidation state of N in HNO3 is +5. Oxygen is -2 and H is +!.