1.Write the electron configuration of calcium 20, Chlorine 17, and Oxygen 8 2. Flourine has 10 neutrons and 9 protons. Calculate the number of electrons and nucleons 3. Nitrogen has 15 nucleons and 7 protons. How many electrons nitrogen has? How many neutrons nitrogen has?

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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