Why is the tungsten used almost exclusively for the filament of electric lamps ?
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because tungsten has some amazing properties like highest melting point (3695k), lowest vapour pressure and greatest tensile strength.
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tungsten is used almost exclusively for making the filaments of electric lamps (or electric bulbs) because it has very high melting point (of 3380°C) due to which the tungsten filament can be kept white hot without melting away Moreover tungsten has high flexibility and low rate of evaporation at high temperature...
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