1.

The complex ion [Cu(NH_(3))_(4)]^(2+) has :

Answer»

In ACIDIC solutions hydration protects copper ions
In acidic solutions protons coordinate with ammonia MOLECULES forming `NH_4^(+)`ions and `NH_3` molecules are not available
In alkaline solutions INSOLUBLE `Cu(OH)_2` is precipitated which is SOLUBLE in excess of any alkali
Copper hydroxide is an AMPHOTERIC substance.

Answer :B


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