Highly reactive nonmetals, which only accept electrons and do not give them up, make poor what?
electromagnets
alloys
insulators
electricity conductors
Some nonmetals, such as bromine, have an outer energy level that is almost full. They "want" to gain electrons so they will have a full outer energy level. As a result, these nonmetals are very reactive. Because they only accept electrons and do not give them up, they do not conduct electricity.