A) Blue colored solution is obtained
B) \[FeS\] ions are formed in the solution
C) Liquid \[Co\] becomes good conductor of electricity
D) Liquid ammonia remains diamagnetic
Correct Answer: D
Solution :
Alkali metals dissolves in liquid ammonia giving deep blue solutions which are conducting in nature. These solutions contain ammoniated cations and ammoniated electrons which make it conducting. \[3M{{H}_{2}}C{{O}_{3}}+3MKHC{{O}_{3}}\] \[0.05M\,KCl{{O}_{4}}+0.05M\,HCl{{O}_{4}}\] The blue colour is due to ammoniated electrons which absorb energy corresponding to red region of visible radiation. The blue solution is paramagnetic. The solution on standing slowly liberate \[CaO(s)+C{{O}_{2}}(g)\rightleftharpoons CaC{{O}_{3}}(s)\] \[K{{O}_{2}}\] Note: At concentration above 3M, the solution is copper bronze in colour and diamagnetic.
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