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METALS, NON-METALS AND METALLOIDS
Metals are typically hard, shiny, malleable (can be made as sheet), fusible and ductile (can be drawn into wire) with good electrical and thermal conductivity. Except mercury, most of the metals are solids at room temperature. Metals occupy larger area in the periodic table and are categorized as:
(i) Alkali metals e.g. Sodium and Potassium
(ii) Alkaline earth metals e.g: Calcium and Magnesium
(iii) Transition Metals e.g: Iron and Nickel
(iv) Other Metals e.g: Aluminium and Tin
A non-metal is an element that does not have the characters of hard, shiny, malleable, suitable and ductile. In other words, a non-metal is an element that does not have the properties of metal. E.g. Oxygen, Nitrogen
Elements which have the properties of both metals and non-metals are called as metalloids. (eg) Boron, Arsenic.
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