Why Copper and Nickel dont have +3 oxidation state?

JEE Mains Answers › Inorganic Chemistry questions › 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?

#Chemistry #Inorganic Chemistry

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5 Answers

1

sheena ·2011-03-27 04:21:16

i didn't get you. kindly elaborate.

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R2 ·2011-03-27 04:30:00

Cu â†’ [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..

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Lokesh Verma ·2011-03-27 04:31:21

@Kunl!!! what crap!

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sheena ·2011-03-27 04:47:21

and what about Nickel?

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Vivek @ Born this Way ·2011-03-27 05:44:06

Ni -> [Ar] 4s¹ 3d⁹

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