Is it true that aluminum and copper are good conductors of heat?

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True

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answer is A.

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Detailed Solution

The above statement is True.
Aluminum and Copper are both actually good conductors of heat and electricity. The conductivity of any material depends on the movement of the electrons in an atom. Aluminum has high conductivity due to the free electrons which are present in its valence shell and the same is copper. Aluminum has three electrons in its outermost orbit, thus it has more free electrons than any other element in the periodic table. In comparison to other metals, it can be considered a poor conductor of heat and also electricity. Hence, due to the presence of free valence electrons, aluminum and copper are good conductors of heat.

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