Why Copper and Nickel dont have +3 oxidation state?

Why Cu and ni dont have +3 oxidation state while Sc and Titanium have both.. i.e, +2 and +3?

5 Answers

1
sheena ·

i didn't get you. kindly elaborate.

1
R2 ·

Cu → [Ar] 3d10 4s1
Now acc.to the electronic configuration, valency is 1.
But the 4s-orbital can take an electron from 3d, resulting in [Ar] 3d9 4s2 , helping it gain a +2 oxidation state...
Now you cannot accommodate more that 2 electrons in that 4s orbital, and so +3 oxidation state is extremely unstable, hence doesnt exist..

62
Lokesh Verma ·

@Kunl!!! what crap!

1
sheena ·

and what about Nickel?

71
Vivek @ Born this Way ·

Ni -> [Ar] 4s1 3d9

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