Oxidation Numbers

+4 is the most common and the most stable oxidation number

This is a anion. chlorine shows +5 oxidation number.

+6. Working this out is tricky. Not knowing the structure, and assuming each oxygen was present as O2- you would have to say -7. This is difficult to understand as S has only 6 valence electrons. The structure is actually O3SOOSO3,(see link), 6 oxide ions (oxidation number -2) and 1 peroxide ion (overall oxidation number -2, average oxygen oxidation number of -1) . Overall the oxygen atoms contribute -14, and less the charge on the ion of -2 gives the total oxidation number of both sulfur atoms as +12, so each sulfur is +6. This is a lot more sensible. S has its maximum oxidation number of +6 as it does in SO3 and SO42-.

The oxidation number of Tantalum in Ta2O5 is +5. In the oxide formula, oxygen has an oxidation number of -2. Since there are two oxygen atoms for every tantalum atom, the oxidation number of Tantalum must be +5 to balance the charges.

In general, oxidation numbers are positive when an atom loses electrons (oxidation) and negative when an atom gains electrons (reduction). The oxidation number reflects the charge that the atom would have if the electron was completely transferred.

Group 15 elements, also known as the nitrogen group, typically have an oxidation number of -3 when they form ions. This group includes elements such as nitrogen, phosphorus, arsenic, antimony, and bismuth.

The oxidation number of Sulfur (S) in Al2S3 is -2. This is because aluminum (Al) typically has an oxidation state of +3, and in Al2S3, the overall compound is neutral, so the oxidation state of sulfur must be -2 to balance the charges.

The oxidation number of oxygen when combined with fluorine is -1. Oxygen usually has an oxidation number of -2, but when combined with a more electronegative element like fluorine, oxygen's oxidation number becomes -1.

This should be SO4-2 ion. sulfur shows +6 in this ion.

The oxidation number of chlorine in PbCl2 is -1. This is because the overall charge of PbCl2 is 0, and since there are two chlorine atoms in the compound, each chlorine atom must have an oxidation number of -1 to balance with the +2 oxidation number of lead (Pb).

Noble gases have a 0 oxidation number because they have a full valence shell of electrons, making them stable and unreactive.

The oxidation number of aluminum (Al) is +3, the oxidation number of chromium (Cr) is +3, and the oxidation number of oxygen (O) is -2. Therefore, in Al2Cr6O21, the total oxidation number would be +6 from aluminum, +18 from chromium, and -42 from oxygen, resulting in a net oxidation number of -18 for the compound.

It can be a any group. Generally they shows +2 in group 2.

In K2Cr2O7, the oxidation number of oxygen is typically -2. Since there are two oxygen atoms in the dichromate ion (Cr2O7)^2-, the total oxidation number contribution from oxygen is -14. To balance this, the oxidation number of Cr is +6. Therefore, the oxidation number of O in this compound is -2.

Group 7 elements, also known as the halogens, have an oxidation number of -1 when they are in compounds. This is because they have 7 valence electrons and tend to gain one electron to achieve a full outer shell in chemical reactions.

The compound with the highest oxidation number would be an oxide of fluorine, such as OF₂. In this compound, the oxidation state of fluorine is +2, which is the highest oxidation state observed for fluorine.

The oxidation number for iodine monoxide (IO) is +1 for iodine and -2 for oxygen.

Charge refers to the electrical charge of an ion, which is the number of valence electrons gained or lost by an atom. Oxidation number, on the other hand, is a hypothetical charge assigned to an atom in a compound based on a set of rules. The oxidation number can be used to determine the charge of an ion in a compound, but it does not always represent the true charge of the atom.

0 in the elemental form and +2 in its compounds

NHO3 ???? I think you mean HNO3 ( Nitric Acid).

NB With all mineral acids the 'H' is the first letter.

To find the oxxidation number., use oxygen at '-2'

Since there are 3 oxygens, then the oxidation state of the oxygen component is 3 x -2 = -6 .

Since also hydrogen is always '+1' then we can constract a sum

1 + N -6 = 0 (NB We equate to zero because it is a neutrally charged molecule.

N - 5 = 0

N = 5 the oxidation state of nitrgoen .

The oxidation number of the carbon atom in isopropyl alcohol (C3H8O) is -2, and for the oxygen atom, it is -2. The hydrogen atoms each have an oxidation number of +1.

Positive oxidation numbers are most common with the metals - groups 1 to 13. However there are many well known compounds where non-metals have positive oxidation numbers- for example NaClO4 where Cl has an oxidation number of +7

In N2O, the oxidation number of nitrogen (N) is +1 and the oxidation number of oxygen (O) is -2. This is because oxygen typically has an oxidation number of -2 in compounds, and since the overall charge of N2O is neutral, the oxidation number of nitrogen must be +1 to balance the charges.

P = +5 PO4^3- = -3

4(-2) + p = -3

P =5