Copper exhibits only +2 oxidation state in its stable compounds. Why?
Copper exhibits only +2 oxidation state in its stable compounds. Why?
A. Coppper is a transition metal in +2 state
B. `+` 2 state compounds of copper are formed by exothermic reactions
C. 2
D. 2
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Correct Answer - B
The stability of `Cu^(2+)`(aq) rather then `Cu^(+)`,(aq) is due to much more negative `Delta_("hyd")H^(@) " of " Cu^(2+)`(aq) than `Cu^(+)`, which compensates for second ionisation enthalpy of Cu.
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