Question

Assign oxidation states to each atom in each of the following species.?
1. CuC2
the oxidation states of Cu, Cl

2. CH4
the oxidation states of C, H

3. Cr2O7^2-
the oxidation states of Cr, O

4. HCO3^-
the oxidation states of H, C, O

Answer 1

1. CuCl2
Cl: 2(-1)= 2-
Cu: 2+
~ON of Cl: 1-
~ON of Cu: 2-

2.CH4
H: 4(1)= 4+
C: 4-

~ON of H: 1+
~ON of C: 4-