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Give reasons: i) Cu^(+2) (aq) is more ...

Give reasons:
i) `Cu^(+2) (aq)` is more stable than `Cu^(+)` 
ii) Ionisation enthalpy increases along transition elements from left to right 
iii) Zn has highest value for `E^(@)(M^(3+)//M^(2+))` among 3d series elements

Text Solution

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i) `cu^(2+)` is more stable than cut due to much inore negative `DeltaH_("hyd")^(@)" of "cu^(2+)`.
ii) Ionisation enthalpy increases along transition elements from left to right due to increase in nuclear charge as electron fill the inner .d.orbitals.
iii) Due to the removal of the electron from stable do configuration of `2n^(2+)`
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