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Write physical and chemical properties of metals and non meatals

Answer» \tPhysical Properties of Metals:\tPhysical State: All metals are solids at room temperature.Exceptions: Mercury and gallium are liquids at room temperature.\tLustre: All metals in their pure state have a shine and can be polished to give a highly reflective surface.\tMalleability: Metals have the ability to withstand high tensile strength and can be made into thin sheets. This property of metals is called malleability.\tDuctility: Metals can also be drawn into thin wires. The ability of metals to be drawn into wires is called ductility. Example: Gold and silver are the most ductile metals.\tConduction of Heat: Metals are good conductors of heat and have high melting points. Example: Silver and copper are very good conductors of electricity.Exceptions: Lead and mercury are poor conductors of heat.\tConduction of Electricity: Metals are good conductors of electricity.Example: All electric wires are made of copper.\tHardness: Metals are generally hard, and their hardness varies from metal to metal. Alkali metals such as sodium and potassium are soft metals and can be easily cut with a knife.\tMelting and Boiling Points: Metals usually have high melting and boiling points. Tungsten has the highest melting point whereas sodium and potassium have low melting points.\tSonorous: Metals which produce a sound on striking a hard surface are said to be sonorous.\xa0\xa0\tNon-metals:Physical Properties of Non-Metals:\tNon-metals are either in the solid or gaseous state.Exception: Bromine is an exception which exists in the liquid state.\tNon-metals do not have lustre.Exception: Iodine crystals are lustrous.\tThey do not possess the property of hardness.Exception: Carbon in the form of diamond is the hardest substance, which has a high melting and boiling point.\tNon-metals are poor conductors of heat and electricity.Exception: Graphite, an allotrope of carbon which conducts electricity.


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