2007-02-28 06:01:13 · 3 answers · asked by ceexbee 2 in Science & Mathematics ➔ Physics
Metals have free valence electrons, which are loosely bound to their shells. So, under a relatively low EMF (electro motive force, expressed as a voltage difference), the electrons start moving and thus help flow of electric current. Metals are also good conductors of heat because of the same free electrons.
2007-02-28 06:06:58 · answer #1 · answered by Swamy 7 · 0⤊ 1⤋
Although they like to feed you that electron shell crap, it actually has to do with the size of the nucleus and the number of neutrons and protons, and their arrangement within the nucleus. Depending on these factors free electrons are either more or less likely to become 'bound' to a nucleus.
2007-02-28 14:09:56 · answer #2 · answered by Anonymous · 0⤊ 0⤋
Certain metals. like copper allow a freer transfer of electrons. Usually, the denser metals like copper, silver, and gold are better conductors than lighter metals like aluminum.
2007-02-28 14:38:58 · answer #3 · answered by rico3151 6 · 0⤊ 1⤋