The dand fblock elements - Result Question 59

####59. Cuprous compounds such as CuCl,CuCN and CuSCN are the only salts stable in water due to

[1996]

(a) high hydration energy of Cu+ions

(b) their inherent tendency to not disproportionate

(c) diamagnetic nature

(d) insolubility in water

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Solution:

  1. (d) Although Cu2+ state is more stable than Cu+, but Cu+ion can be stabilized by formation of insoluble substances such as CuCl,CuCN and CuSCN. Cu2+ is more stable than Cu+ because of its high hydration energy.


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