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what are poor conductors of heat and electricity what are poor conductors of heat and electricity called what are bad conductors of heat and electricity what elements are poor conductors of heat and electricity what are usually poor conductors of heat and electricity what materials are poor conductors of heat and electricity elements that are bad conductors of heat and electricity are what type of elements are poor conductors of heat and electricity what group of elements are poor conductors of heat and electricity metals are poor conductors of heat and electricity
