2007-12-21 07:08:38 · 2 answers · asked by amanda R 1 in Science & Mathematics ➔ Mathematics
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. 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. Fe^III, 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.
Heck, I don't know the answer because I've forgotten my chemistry. Maybe ask the same question in the Chemistry category and see if you get more answers.
2007-12-21 07:55:09 · answer #1 · answered by Puzzling 7 · 0⤊ 0⤋
in the MATHS section?
(another one added)
2007-12-21 07:30:46 · answer #2 · answered by Anonymous · 0⤊ 0⤋