Question

oxyidation numbers and types of loans​

Answer 1

Answer:Oxidation number, also called oxidation state, the total number of electrons that an atom either gains or loses in order to form a chemical bond with another atom.

Each atom that participates in an oxidation-reduction reaction is assigned an oxidation number that reflects its ability to acquire, donate, or share electrons. The iron ion Fe3+, for example, has an oxidation number of +3 because it can acquire three electrons to form a chemical bond, while the oxygen ion O2− has an oxidation number of −2 because it can donate two electrons. In an electronically neutral substance, the sum of the oxidation numbers is zero; for example, in hematite (Fe2O3) the oxidation number of the two iron atoms (+6 in total) balances the oxidation number of the three oxygen atoms (−6).

Certain elements assume the same oxidation number in different compounds; fluorine, for example, has the oxidation number −1 in all its compounds. Others, notably the nonmetals and the transition elements, can assume a variety of oxidation numbers; for example, nitrogen can have any oxidation number between −3 (as in ammonia, NH3) and +5 (as in nitric acid, HNO3).

Explanation:

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Answer 2

The Oxidation number of an atom is the number of charges present on the atom with which the compound is formed

Explanation:

1. Neutral substances or elements have zero oxidation numbers. for example Oxygen, ozone phosphorus.
2. Simple ions have an oxidation number equal to the charge on the ion.  For example -sodium ion is +1 and chlorine ion is -1.
3. Oxidation number of hydrogen is +1 when combined with nonmetals methane, ammonia, water and Hydrochloric acid.
4. The Oxidation number of hydrogen is -1 when combined with a metal example LiH, NaH.
5. Oxygen generally has a -2 oxidation number.
6. The sum of the oxidation number of neutral compounds is zero.