A) \[Na[Ag{{(CN)}_{2}}]\]
B) \[N{{a}_{2}}[Ag{{(CN)}_{2}}]\]
C) \[N{{a}_{4}}[Ag{{(CN)}_{2}}]\]
D) none of these
Correct Answer: A
Solution :
During the extraction of silver sodium argentocyanide is formed: \[\underset{silver\text{ }glance}{\mathop{A{{g}_{2}}S}}\,+2NaCN\xrightarrow{{}}N{{a}_{2}}S+2AgCN\downarrow \] \[AgCN+NaCN\xrightarrow[{}]{{}}\underset{sodium\text{ }\arg entocyanide}{\mathop{Na[Ag{{(CN)}_{2}}]}}\,\]
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