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Question

The oxidation state of mercury in amalgam, calomel and corrosive sublimate is:

A
0, +1, +2
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B
+1, +1, +2
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C
+1, +2, +1
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D
0, +1, +1
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Solution

The correct option is A 0, +1, +2
In amalgam, mercury has 0 oxidation state
Calomel is Hg2Cl2 in which Hg oxidation state is +1
Corrosive sublimate is HgCl2 in which Hg oxidation state is +2

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