係唔係全部的金屬都係良好導體

純金屬係良好既導體

因為佢地有自由電子

自由電子可以幫助傳熱

而因為電子可以自由流動既關係

所以金屬都係良好既導電體

雖然每種金屬既電阻值唔一樣

但係佢地既導電性都係良好

Metals and Alloys are good conductors of electricity because metallic bond is the linkage among the metal atoms and the valency electrons could move around freely within the metal so metals is a good conductor of electricity.

唔係 金同銅係最好導體 但我們用銅因為銅比金平