A) \[Au\]
B) \[Ag\]
C) \[Hg\]
D) \[Cu\]
Correct Answer: A
Solution :
\[Au,\] the gold is not attacked by acids and alkalis. It forms \[AuC{{l}_{3}}\].\[AuC{{l}_{3}}\] farther reacts with \[HCl\] to form \[H[Au{{(Cl)}_{4}}]\] which is used in photography. \[AuC{{l}_{3}}+HCl\xrightarrow[{}]{}\underset{Complex}{\mathop{H[Au{{(Cl)}_{4}}]}}\,\]You need to login to perform this action.
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