What is the oxidation number of Ni in [Ni(CN)₄]^2-? A)+2 B)+1 C)0 D)+3 E)+4

Question

Quizplus · Accepted Answer

The oxidation number of CN is -1 (since C is +2 and the overall charge of the complex is 0). The oxidation number of S is also -1 (since it is not bonded to a more electronegative element). Let x be the oxidation number of Ni. Then, we can set up the equation:

x + (-1) + (-1) + (-1) = 0
x - 3 = 0
x = +3

Therefore, the oxidation number of Ni is +3, which is answer choice A.

What Is the Oxidation Number of Ni in [Ni(CN)4]2-

What Is the Oxidation Number of Ni in [Ni(CN)₄]^2-