oxidation number in a sentence

1. Assign an oxidation number of +1 to hydrogen (with exceptions).

2. Values are given for typical oxidation number and coordination.

3. hydrogen has an oxidation number of +1 in most of its compounds.

4. Free, uncombined elemental atoms always have an oxidation number of 0.

5. We should therefore review the rules for calculating oxidation numbers.

6. The gold atom number is 79, its atomic weight is 197, and the oxidation number is + I and + III.

7. hydrogen has an oxidation number of -1 when combined with a metal and +1 when combined with a nonmetal.

8. If the oxidation number is greater in the product, then it lost electrons and the substance was oxidized.

9. For example, Al(s) and Cl2 both have oxidation numbers of 0 because they are in their uncombined elemental forms.

10. Even if we study them at school, oxidation numbers have so far eluded any rigorous quantum mechanical definition.

11. Evidence: If several of the atoms given in this list occur at once, the oxidation numbers are listed according to this hierarchy.

12. since it's the second most electronegative element, oxygen in a compound always has an oxidation number of -2(with only a few exceptions).

13. redox(shorthand for reduction-oxidation reaction) is any chemical reaction in which atoms have their oxidation number(oxidation state) changed.

14. The oxidation number is a value assigned to the atoms in a chemical reaction to determine which atoms in a reaction have been oxidized and reduced.

15. fluorine is the most electronegative element(i.e. it exerts the strongest pull on electrons), so in a compound it always has an oxidation number of -1.

16. In order to determine what happens to which elements in a redox reaction, you must determine the oxidation numbers for each atom before and after the reaction.

17. However, it retains the one electron from the shared bond with the other C. Since it now has only 1 valence electron, it has officially lost 3 electrons, and its oxidation number is +3.

18. If the oxidation number of an element in the reaction increases or becomes less negative, the element has been oxidized, while a decreased or more negative oxidation number means the element has been reduced.

19. In practice, the transfer of electrons will always cause a change in oxidation number, but there are many reactions which are classed as "redox" even though no electron transfer occurs (such as those involving covalent bonds).