Are Electron atomic particles with a positive or negative charge?

positive

Explanation:

Electrons are a type of subatomic particles  with a negative charge. Protons are a type of subatomic particles with a positive charge. But the answer is positive because it results of a strong nuclear force.

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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