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Magnesium is a divalent cation, with oxidation number +2, and bromide is a monovalent anion, with oxidation number -1 for each of the two ions. Thus the compound is electrically neutral.
H2SO4 is a compound and as such does not have an oxidation number. The individual atoms in this compound have oxidation number +1 for each hydrogen atom, +6 for sulfur, and -2 for each oxygen atom.
- 2 for each O, +3 for each Ni
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For Mg the oxidation no is +2 while it is -2 for oxygen.
Magnesium is a divalent cation, with oxidation number +2, and bromide is a monovalent anion, with oxidation number -1 for each of the two ions. Thus the compound is electrically neutral.
H2SO4 is a compound and as such does not have an oxidation number. The individual atoms in this compound have oxidation number +1 for each hydrogen atom, +6 for sulfur, and -2 for each oxygen atom.
- 2 for each O, +3 for each Ni
The hydrogen atoms are each in the 1+ oxidation state. The oxygen is in it's 2- oxidation state.
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For Mg the oxidation no is +2 while it is -2 for oxygen.
The sum of the oxidation numbers is zero for the compound.
It is different compound to compound. Sulfur generally shows +6 and +4.
The oxidation number of H is +1 and the oxidation numbers of each carbon are +3
+1 for each H -2 for each O +4 for each S
The sum of oxidation numbers in a neutral compound is always zero. (Note that in order for this to be true, the oxidation number of each type of atom present must by multiplied by the number of such atoms present in the formula unit for the compound before the addition is performed.)
The oxidation number of iron in this compound is 3. The oxidation numbers of the total oxygen atoms and the total iron atoms must be the same in a neutral compound. There are three oxygen atoms, giving a total for oxygen of 3 X 2 = 6. There are only two iron atoms; therefore, each one must have an oxidation number of 6/2 = 3.