What are metal oxides and oxoanions?, Chemistry

The elements of first transition series from variety of oxides of different oxidation states having general formulae MO, M2O3, M3O6, MO2, MO3. These oxides are generally formed by heating the metal with oxygen at high temperature. These oxides are listed in the table below:

Se Sc2O2 (b)
Ti TiO (b), TiO2 (b), TiO2 (c)
V VO (b), V2O3 (b), VO2 (c), V2O5 (a)
Cr CrO (b), Cr2O3 (c), CrO2 (c), Cr2O3 (a)
Mn MnO (b), Mn2O3 (b), Mn3O4 (c), MnO2 (c), Mn2O7 (a)
Fe FeO (b), Fe2O3 (c), Fe3O4 (b)
Co CoO (b)
Ni NiO (b)
Cu Cu2O (b), CuO (c)
Zn ZnO (c)

All the metals except scandium form MO oxides which are ionic in nature. The highest oxidation number of the metal in the oxides coincides with the group number is attained in case of metals from scandium to manganese (Sc2O3 to Mn2O7). Beyond group-7, no higher oxides except Fe2O3 are known. Besides the oxides, the oxocations stabilize V(V) as VO2+, V(IV) as VO2+ and Ti(IV) as TiO2+.

These oxides exhibit acidic, basic and amphoteric behaviour.

Some of the characteristic features of these oxides are given below:

(i) In general, oxides are basic when the metal is in lower oxidation state and they are acidic if the metal is in higher oxidation state.

(ii) The oxides are generally amphoteric if the metal is in intermediate oxidation state.

Posted Date: 6/25/2012 8:22:47 AM | Location : United States







Related Discussions:- What are metal oxides and oxoanions?, Assignment Help, Ask Question on What are metal oxides and oxoanions?, Get Answer, Expert's Help, What are metal oxides and oxoanions? Discussions

Write discussion on What are metal oxides and oxoanions?
Your posts are moderated
Related Questions
Preparation of benzaldehyde by etard''s reaction

how is the material extracted from concentrated ore?

Stephen reaction - Aldehydes and Ketones Benzaldehyde is acquired by partial reduction of phenyl cyanide along with stannous chloride and passing dry HCl gas in ether solution

Simple proteins Simple proteins are made up of chains of amino acid units just joined by peptide linkages. These types of proteins on hydrolysis yield just only mixture of amin

What is the rate of reaction at the optimum temperature? (the starting concentration of the protein was 2 mg/ml, the Extinction coefficient (e) of the chromogenic product is A515 =

Nucleophilic aromatic substitution reaction The product is formed by a nucleophilic aromatic substitution reaction in which chloride is displaced by hydroxide ion.  The product

explain the synthesis of freon and westron i need only the synthesis of those coompound

A flash separator "flashes" (abrupt increase in temperature and pressure) a liquid stream containing multiple species. Not all of the liquid vaporizes, but the vapor that does form

how do we estimate nicotine in tobacco qualitatively in lab by simple chemical test?