A) \[NH_{4}^{+}\]
B) \[Cl\]
C) \[Br\]
D) \[I\]
Correct Answer: A
Solution :
In the identification of\[NH_{4}^{+}\]ion neseller reagent\[{{K}_{2}}Hg{{I}_{4}}\]is used with which it give brown precipitate.
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