Why does a piece of cork float in water? (2 points) the cork is less dense than the water. the cork has less mass than a molecule of water. the water has more volume than the cork. the water weighs more than the cork.

metals are good conductor of electricity. it has free electrons on their surface. according to electron pool theory, each atom present in a metal crystal losses all of its valence electron and as a result a pool of free is form. these pool of electrons are free to move and   conduct electricity easily   while making metal as good conductor.

the correct answer is a. the ability of electrons to flow throughout the metal.

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