Q.

Metals are good conductors of electricity because
(a)The atoms are lightly packed
(b)They have high melting point
(c)They contain free electrons Right sign
(d)All of the above
Details:Electric current is the flow of electrons in a wire. In metals, 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 can move freely through the lattice of positive metal ions

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