You add 8.9 g of iron to 23.40 ml of water and observe that the volume of iron and water together is 24.53 ml . calculate the density of iron. express your answer to two significant figures with the appropriate units.

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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