Oxidation number describes gain of electrons. It involves addition of oxygen and removal of hydrogen.
Configurations
Oxidation is a chemial reaction; the atom and the number of neutrons remains unchanged.
No. Oxidation is the loss of electrons by an atom, or equivalently an increase in the oxidation number of that atom. Rust formation is one example of oxidation.
It would be a positive ion, which is called an anion. (pronounced an-ion)
Because they have only one electron in their valency shell. The second oxidation state would require the atom to lose an electron from its penultimate shell which is full.
If an atom loses electron, then it will have a positive oxidation number. If an atom gains electron, then it will have a negative oxidation number.
The oxidation number is the same as the charge that the atom has. If the atom usually loses an electron, then it is losing a negative charge and having more positive making it a + 1. If the atom loses two electrons, then the oxidation number would be +2. The same thing with gaining electrons, then there would be more negative charges then positive. If the atom gains one electron, then the oxidation number would be - 1. If the atom gains two electrons, then the oxidation number would be - 2. I hope that this was helpful.
An element's oxidation number indicates how many electrons an atom has gained, lost, or shared to become stable.
The process of removing an electron from something is called either oxidation or ionization. Ionization is the process of converting an atom or molecule by changing the number of electrons. In certain chemical reactions, the oxidation state of an atom or molecule is changed, and this is known as oxidation. See more details in the Web Links to the left of this answer.
Positive oxidation number implies that electrons are generally lost by the element.
Configurations
The oxidation number of an atom describes the number of electrons that an element has partially/entirely accepted/donated. A neutral atom has oxidation number of 0. When forming an ion, the overall oxidation number is equivalent to its charge.
Oxidation number increases when the atom is oxidised, and decreases when it is reduced
Oxidation state is what determines the number of each atom. This is in the ionic formula.
Each Br atom has an oxidation number of zero.
Oxidation is a chemial reaction; the atom and the number of neutrons remains unchanged.
Pottasium has +1 oxidation number.Iodine has -1 oxidation number.