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On the basis of certain basic properties, all the elements have been divided into two classes: metals and non-metals. 80% of the total elements (known till now) are metals. Metals are the good conductor of heat and electricity, they are malleable and ductile. Most of the metals are found in combined state.Metals are strong and are useful for making tools, buildings, bridges and other structures where strength is important. The most abundant metal on the earth is iron.The tallest free-standing structures in the world are made of metals, primarily the alloy steel. They include the Dubai skyscraper Burj Kalifa, the Tokyo television tower Skytree, and the Shanghai Tower skyscraper. Some of the examples of metals are copper, gold, iron, aluminium, etc.
Metals are those electropositive elements which are good conductor of heat and electricity. For example, gold, platinum, iron, etc.
Non-metals are those electropositive elements which are bad conductor of heat and electricity. For example, oxygen, nitrogen, sulphur, iodine, etc.
The physical properties of metals are: (i) Metals are good conductor of heat and electricity. (ii) They are ductile in nature. (iii) They can be converted into thin sheet after hammering. Thus, we can say that they are malleable in nature.
The melting point and boiling point of silver are 960 degree C and 1955 degree C respectively.
The property of metal being made into wires is called ductility.