Question

3) The sum of oxidation states of all atoms in Clo4-
ion is
a) Zero b) -4 c)-1 d) +2
​

Answer 1

Answer:

sum of oxidation states of all atoms = - 1

Explanation:

net oxidation state of (ClO4)- is (-1). Oxygen (O), in most of its cases has an  oxidation state of (-2). four oxygen atoms are present in this case, therefore net oxidation state is

(-2) x 4 = (-8)

Therefore the oxidation state of chlorine (Cl) is

(-1) - (-8) = (+7).

sum of oxidation states of all atoms = -8 + 7

sum of oxidation states of all atoms = - 1