The oxidation number of O in any elemental form (e.g. O2, O3) is zero. Typically in chemical compounds the oxidation number of O is -2 (oxide ion)
The oxidation number of a central atom in a coordination compound is the charge that it would have if all the ligands were removed along with the electron pairs that were shared with the central atom.[1] It is used in the nomenclature of inorganic compounds. It is represented by a Roman numeral; the plus sign is omitted for positive oxidation numbers. The oxidation number is placed either as a right superscript to the element symbol, e.g. FeIII, or in parentheses after the name of the element, e.g. iron(III): in the latter case, there is no space between the element name and the oxidation number.
The oxidation number is usually numerically equal to the oxidation state. However, in a few cases the ligand atom can be less electronegative than the central atom (e.g., in iridium phosphine complexes), resulting in a formal oxidation state that is different from the oxidation number.
In chemistry, the oxidation state is an indicator of the degree of oxidation. Oxidation is a reduction of electrons. If Mn (zero oxidation state in elemental form) loses an electron it become Mn+ that is oxidation state 1. If it loses 3 electrons to become Mn3+ is is in oxidation state +3
The official definition of IUPAC is the following:
"Oxidation state of an atom is the charge of this atom after ionic approximation of its heteronuclear bonds,
(and the term oxidation number is nearly synonymous)".
Apex The charge an element would have if it were an ion
Hydrogen has -1 and +1 oxidation numbers. Other elements have +1 only
Group 1 elements have +1 oxidation number (except for hydrogen) All group 2 elements have +2 oxidation number Fluoride ion always has -1
Elements with positive oxidation number easily combined with those having a negative oxidation number because opposite oxidation number attracts each other.
The oxidation number of lead (Pb) in the compound PbCl2 has to be what?
There is at least one oxidation number shared by all the elements in a periodic table column, but some of the elements may have more than one oxidation number and some of these additional oxidation numbers may not be possible for all the elements in a column.
Hydrogen has -1 and +1 oxidation numbers. Other elements have +1 only
all the pure elements have zero oxidation state.....
The oxidation number of lead (Pb) in the compound PbCl2 has to be what?
Group 1 elements have +1 oxidation number (except for hydrogen) All group 2 elements have +2 oxidation number Fluoride ion always has -1
Elements with positive oxidation number easily combined with those having a negative oxidation number because opposite oxidation number attracts each other.
Elements with positive oxidation number easily combined with those having a negative oxidation number because opposite oxidation number attracts each other.
The oxidation number of lead (Pb) in the compound PbCl2 has to be what?
There is at least one oxidation number shared by all the elements in a periodic table column, but some of the elements may have more than one oxidation number and some of these additional oxidation numbers may not be possible for all the elements in a column.
all the pure elements have zero oxidation state.....
The way in which elements bond to form compounds depends on the arrangement and number of electrons in the atoms. This is what will determine the type of boding that elements will form.
A neutral atom has an oxidation number of 0. An anion has a negative oxidation number. The oxidation number of a cation is positive.
Elements in group 2 mostly takes the oxidation number +II.