A) \[2H{{g}^{2+}}\xrightarrow[{}]{{}}Hg_{2}^{2+}\]
B) \[Mg\xrightarrow[{}]{{}}M{{g}^{2+}}\]
C) \[2{{I}^{-}}\xrightarrow[{}]{{}}{{I}_{2}}\]
D) \[Cu_{2}^{2+}\xrightarrow[{}]{{}}2C{{u}^{2+}}\]
Correct Answer: A
Solution :
\[2H{{g}^{2+}}+2{{e}^{-}}\xrightarrow[{}]{{}}Hg_{2}^{2+}\] This is a reduction reaction.
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