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We normally associate metals with solids (at room temperature) -- Mercury being one exception. All materials, solids or fluids, can conduct heat. However, not all solids are good conductors, but most metals are. I don't know about sodium, a metal, though, because it disintegrates in room air -- not practical to do a controlled experiment to prove about it being a good heat conductor or not. However, since those solids that are classified as a metal for the reason that each metal has free roaming electrons, which can be transport heat, and since solids also have phonons (lattice vibrations), sodium can conduct heat too (at least for the first mini-seconds of being exposed to air) -- just don't know whether sodium is a good heat conductor if it stands alone. BTW, mercury is a good heat conductor too.

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16y ago

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