list of pure metals

Summary Matter is anything that occupies space and has mass Element is a pure substance, which can neither be decomposed nor built from simpler substances by any physical or chemical means. It contains only one kind of atom. Broadly speaking, elements can be divided into m..

Although most metals are usually electropositive in nature and lose electrons in a chemical reaction they do not react with the same vigour or speed. Metals display different reactions towards different substances. The greater the ease with which an element loses its electrons ..

For this purpose, the impure metal is made the anode, and a pure metallic strip is used as cathode. A soluble salt of pure metal is taken as the electrolyte. On passing current, the impure metal anode dissolves but only the pure..

Electrorefining of metals is a process of obtaining pure metal from the impure one by the process of electrolysi..

Most metals obtained by the reduction process are not very pure. These have to be further refined or purified. Purification of the metal is the last step in metallurg..

The metals so extracted are further refined by suitable methods. The electrolytic method is the most suitable method for refining the non-ferrous metals. The metals produced by any method given above are not very pure. These need further refinin..

Many transition metals combine with carbon monoxide under suitable conditions to form carbonyls. For example, This reaction forms a basis for purification of nickel by Mond's process. CO forms carbonyls with chromium, molybdenum, iron, cobalt etc. als..

black metal oxide on heating with carbon 2CuO (s) + C (s) ------- > 2Cu (s) + CO 2(g) Silver Ag No reaction with cold water or when heated in steam. No reaction with dilute hydrochloric acid or dilute sulphuric acid. Silver can be extracted by reduction but can be found ‘native&r..

Zone Refining - This method is used for obtaining ultra pure metals like germanium, silicon and galliu..

In metals, the conduction band and valence band partly overlap each other and there is no forbidden energy gap. In insulators, the conduction band is empty and valence band is completely filled and forbidden gap is quite large = 6 eV. No electron from valence band can cross over to c..