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Why does metal conduct electricity |
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Answer» Metals can conduct electricity because of the free electrons present in it. These free electrons will move in a particular direction ( the direction of the flow of current ) when electricity is passed through it this conducting electricity. Metal conduct easy because most of the metals will lose electrons , we have already studied the flow of electrons is electricity. Therefore in metals electrons can easily move . So that the metals are good conductor of electricity Metal conduct electricity because it is a good Conductor of electricity the close packing of the metal ions in the\xa0latticethe\xa0delocalised electrons\xa0can carry kinetic energy through the lattice.Picture 1.4 A\xa0cool lattice. If we heat the left hand end, then the energy will be\xa0carried along\xa0by\xa0conduction.Ionic vibrationsThe positive metal ions in a metal structure are packed closely together in a symmetrical geometric arrangement. They don’t move from their position in the lattice but they are constantly\xa0vibrating. If a metal is heated, the positive metal ions vibrate more vigorously. These ions collide with neighbouring ions and make them vibrate more vigorously too. In this way, the energy is\xa0passed, or\xa0conducted, through the metal. Substances\xa0conduct electricity\xa0because they contain charged particles that are able to move. When a voltage is applied to a\xa0metal, the delocalised electrons travel through the lattice structure. The movement of these charged particles forms an electric current. Electric\xa0current is the flow of electrons in a wire. In\xa0metals, the outer electrons of the atoms belong to a \'cloud\' of delocalised electrons. They are no longer firmly held by a specific atom, but instead they\xa0can\xa0move freely through the lattice of positive\xa0metal\xa0ions. Metals\xa0are good conductors of heat. |
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