Calculate the oxidation number :(i) Mo in (NH4)2MoO4(ii) Ni in [Ni(CN)

1.	Calculate the oxidation number :(i) Mo in (NH4)2MoO4(ii) Ni in [Ni(CN)4]2-
Answer» (i) Suppose oxidation number of Mo in (NH₄)₂MoO₄ = x 2 (+1) + x+ 4 (-2) = 0 2 + x – 8 = 0 x – 6 = 0 x = + 6 (ii) Suppose, oxidation number of Ni in [Ni(CN)₄]^2- = + x x + 4 (-1) = -2 x – 4 = -2 x = -2 + 4 = +2 ∴ Oxidation number of Ni in [Ni(CN)₄ ]² = + 2

Calculate the oxidation number :(i) Mo in (NH4)2MoO4(ii) Ni in [Ni(CN)4]2-

Answer»

(i) Suppose oxidation number of Mo in (NH₄)₂MoO₄ = x
2 (+1) + x+ 4 (-2) = 0
2 + x – 8 = 0
x – 6 = 0
x = + 6

(ii) Suppose, oxidation number of Ni in [Ni(CN)₄]^2- = + x
x + 4 (-1) = -2
x – 4 = -2
x = -2 + 4 = +2
∴ Oxidation number of Ni in [Ni(CN)₄ ]² = + 2