Question

Give reason for why Copper(I) has d
10
configuration, while copper(II) has d
9
configuration, still copper(II) is more stable in aqueous solution than copper(I).​

Answer 1

Answer:

Copper(I) has d10 configuration, while copper(II) has d9 configuration, still copper(II) is more stable in aqueous solution than copper(I) due to more negative enthalpy of hydration of Cu(aq)2+ than Cu(aq)+ which compensates for second ionisation enthalpy of copper.

Answer 2

Answer:

Copper(I) has d10 configuration, while copper(II) has d9 configuration, still copper(II) is more stable in aqueous solution than copper(I) due to more negative enthalpy of hydration of Cu(aq)2+ than Cu(aq)+ which compensates for second ionisation enthalpy of copper.