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Q.

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

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a

Copper is transition metal in +2 state

b

+2 state compounds of copper are formed by exothermic reactions

c

Electron configuration of copper in +2 state is [Ar]3d94s0

d

Copper gives coloured compounds in +2 state

answer is B.

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Detailed Solution

Copper has only a +2 oxidation state in its compound because the +2 state is formed by an exothermic reaction.

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