+5
Each Br atom has an oxidation number of zero.
The oxidation state of nitrogen in HNO3 is +5 because oxygen is assigned an oxidation state of -2 and hydrogen is assigned an oxidation state of +1. The sum of the oxidation states must equal the overall charge of the molecule (zero in this case for a neutral compound).
The oxidation state of 5 is +5. In chemistry, oxidation states represent the number of electrons that an atom has gained or lost in a compound. In this case, an atom with an oxidation state of +5 has lost 5 electrons.
The electronic configuration of Bromine in its ground state is: 1s2 2s2p6 3s2p6d10 4s2p5. Therefore the principal quantum number for the outermost electrons in a Bromine atom is 4.
5 valence electrons exist in bromine period, at ground state bromine has 3 valence electrons
Each Br atom has an oxidation number of zero.
In FeBr3, iron (Fe) has an oxidation state of +3 and bromine (Br) has an oxidation state of -1. Each bromine atom contributes -1 oxidation state, and since there are three bromine atoms, the total is -3, balancing the +3 oxidation state of iron for the compound to be neutral.
The oxidation state of an individual sulfur atom in SO4 is +6. In the sulfate ion (SO4^2-), each oxygen atom has an oxidation state of -2, for a total of -8. Since the overall charge of the sulfate ion is -2, the sulfur atom must have an oxidation state of +6 to balance out the charge.
In the reaction, bromine gains an electron and forms a bromide ion (Br-). This results in a decrease in the oxidation state of the bromine atom from 0 to -1.
The oxidation state of an individual nitrogen atom in CaCO3 is +4. In CaCO3, nitrogen is present in the carbonate ion (CO3)2-, and since each oxygen atom in the carbonate ion has an oxidation state of -2, the carbon atom must have an oxidation state of +4 to balance the charge.
The oxidation state of an individual phosphorus atom in PO is +5. This is because oxygen typically has an oxidation state of -2, so in the compound PO, the overall charge is 0, which means the oxidation state of phosphorus must be +5 to balance the charges.
The oxidation state of bromine in calcium hypobromite (Ca(BrO)2) is +1. This is because the calcium ion has a +2 charge, and since hypobromite (BrO-) ion has an overall -1 charge, the bromine atom must have a +1 oxidation state to balance the charges.
The oxidation state of an individual sulfur atom in BaSo4 is +6.
The oxidation state of sulfur in MgSO4 is +6. This is because magnesium has an oxidation state of +2 and oxygen typically has an oxidation state of -2, so the overall compound must have a net charge of 0, leading to sulfur having an oxidation state of +6 to balance the charges.
In SO3^2-, sulfur has an oxidation state of +4 (Sulfur's typical oxidation state is +6 and each oxygen has an oxidation state of -2, so the total charge of the ion of -2 corresponds to sulfur being in a +4 oxidation state).
The oxidation state of sulfur in SO3 is +6. Each oxygen atom has an oxidation state of -2, and since the overall charge of SO3 is 0, the oxidation state of sulfur must be +6 to balance out the charges.
In KNO3, the nitrogen atom has an oxidation state of +5. This is because potassium (K) is in Group 1 and has an oxidation state of +1, and oxygen (O) is in Group 6 and has an oxidation state of -2. To balance the charges, nitrogen must have an oxidation state of +5.