GUJCET 2011 Chemistry Solved Paper

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Question : 18 of 40

Marks: +1, -0

Copper exhibits only +2 oxidation state in its stable compounds. Why?

Copper is transition metal in +2 state.
+2 state compounds of Copper are formed by exothermic reactions.
Electron configuration of Copper in +2 state is [ Ar]‌3‌d9‌4‌s0.
Copper gives coloured compounds in +2 state.

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