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Mercury's most common oxidation state is +2
Oxidation state of any element in its elemental state is 0
In amalgams, the oxidation number of mercury is typically 0 because it is in its elemental form. Amalgams are alloys of mercury with other metals, where the mercury atoms do not change their oxidation state.
The oxidation state of Hg in Hg2Cl2 is +1.It has +1 state.
Zinc commonly exists in compounds in the +2 oxidation state only, and as a metal with an oxidation state of 0.0, 1 and 2 oxidation states
Hg2O.
For the one oxidation state. HgNO3 for the two oxidation state. Hg(NO3)2
Mercury do not occur in combine state (i.e. it occur in free state) and in liquid form. It is the only metal who occur in liquid form.
Vanadium is an element that commonly exhibits an oxidation state of +5.
The oxidation number of rhenium (Re) can vary, but it is most commonly found in the +7 oxidation state.
The oxidation number of Hg in HgOH is +1. Mercury (Hg) typically has an oxidation state of +1 in compounds. Oxygen usually has an oxidation state of -2, so the oxidation state of Hg can be determined by setting up an equation and solving for x: x + (-2) = 0; x = +2.
Zinc is in oxidation state +2 and oxygen in oxidation state -2. Zinc Oxide itself has not net charge/oxidation state.