0
The oxidation number of any free element is 0. So if it is oxygen by itself (e.g., O2) then the oxidation number/state is 0. In its compounds the oxidation number of oxygen is -2. This rule only stands if it isn't a peroxide such as H2O2 or Na2O2, in peroxide cases, the oxygen is -1.
What else can I help you with?
Why is an atom which accepts an electron called reduced instead of oxidized?
An atom that accepts an electron is called reduced because it gains electrons, which leads to a reduction in its oxidation state. In a reduction-oxidation (redox) reaction, the atom that accepts electrons is undergoing reduction, not oxidation.
What are the kinds of fire and its definition?
There is no such thing as different "kinds" of fire. A fire's property depends entirely on the fuel it is burning, and the environment it is burning in. Natural gas burns blue, while gasoline burns a smoke, red-orange flame. The basic definition of fire is the rapid oxidization of something - that is, in laymen terms, the addition of oxygen to a oxidization substance. Fire is, however, very rapid oxidization. Your body also oxidizes sugar that you eat, but at a much slower rate. Rust is the oxidization of iron in air, but very slowly. If you burn steel wool, the iron in the steel is turning into rust from oxidization, but at a much faster rate. An example of simple oxidization is the combustion of hydrogen. When you burn hydrogen in enough oxygen, two hydrogen atoms attach to an oxygen atom in the environment or from an oxidizer, forming water in the form of a vapor. Most combustible substances contains carbon atoms, and thus forms smoke (carbon monoxide and dioxidee). Some other elements, like chlorine and fluorine, can also sustain combustion in place of oxygen. But they are rather dangerous and since oxygen is abundant in our atmosphere, most fires are defined as the oxidization of it.
Why is air needed to burn?
Burning is a rapid oxidization of carbon compounds. Air is the primary source of oxygen for this process to happen.
How does oxidization effect shelf life of tint?
Oxidization reduces the shelf of tint. This is why it is important to prevent exposure to air and water, elements which propagate oxidization.
What occurs when oxygen combines with another compound to form water and carbon dioxide?
This is called combustion or oxidization. For example, from experience, burning an object will release CO2 into the air, and oxygen will rust iron.
What gas does the plant put back into the atmosphere and who uses the gas?
The plant put back oxygen into the atmosphere and the humans (us) use the oxygen to breathe Oxygen is used by all living things as well as playing a part in oxidization Fire corrosion etc
What rusting of iron?
Oxidization
Why does cooper reacts with air to form oxide?
In chemical terms, the answer to the question "Why does copper oxidize?" is that the electro potential of copper is higher than that of oxygen. When a metal has an electro potential higher than oxygen, oxidization is a spontaneous reaction that occurs.
When is the oxidization state of metal indicated in the name of a compound?
1. By the suffix -ous or -ic.2. By a Roman number in parentheses as (I), (II), etc.
What make a penney tarnish?
Oxidization
Why do substances rust?
Substances like iron rust when they react with oxygen in the presence of moisture, forming iron oxide. This oxidation process weakens the material, leading to the formation of rust. Rusting is an electrochemical reaction that occurs over time when iron is exposed to oxygen and water.
How does spray painting prevent rust?
when a coating of paint is applied to steel, it seals the from the air. When raw metal is exposed to air (specifically oxygen), a process called oxidization gradually occurs which creates the rust. Good surface preparation, followed by a primer and a top coat will barrier the steel from the elements, therefore prevent oxidization and in turn prevent rust.
