In which of the following does the central atom exhibit an oxidation state of +2 ?
In which of the following does the central atom exhibit an oxidation state of +2 ?
K2 [Ni(CN)4 ]
K3 [Fe(CN)6]
[Fe(C2O4)3 ]3-
[Cu(NH3)4 ]2+
The Correct Option is A, D
Solution and Explanation
K2(Ni(CN)4):
In this the anion will have a charge of -2 as 2K+ is present.
Then the charge on the central atom that is Ni can be calculated:
CN has a charge of -1, therefore Nickel x
x+4(-1) = -2
x = +2
[Cu(NH3)4 ]2+:
In this NH3 is neutral thus has a charge of 0 and the compound has an overall charge of +2.
Therefore the charge on the central atom that is Cu is +2.
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