True: Diamond is a non-metal with lustre, Mercury is a metal but is present in liquid state , Metals have high tensile strength, Iodine and Graphite are lustrous non-metals., False: metals exist in solid ,liquid and gaseous state, Zinc Metal is malleable, Carbon fibre is a non-metal which is non-malleable and non-ductile, Non -metals are good conductors of heat and electricity.,

Physical properties and exceptions

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