The element P has an atomic number of 15 and an atomic mass of 31. Which statement has the correct number of protons, electrons, and neutrons?

Atomic number of 15

Explanation:

15 electrons, 15 protons, and 16 neutrons

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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