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ELECTRONS
The electron is the
part of the atom that orbits the nucleus of the atom. The nucleus of the
atom contains neutrons, which have no electrical charge and protons, which
have a positive charge. An atom, under normal conditions, will have the
same number of electrons as protons. Under certain conditions the atom
will lose or gain an electron. The electrons are in multiple shells. Each
shell has a certain number of electrons. The electrons are tightly held
in shells that are full. If a shell takes 8 electrons to fill it but only
has fewer than 8 electrons, the atom will let the electrons come and go
with little force. This is the reason that some elements will conduct easily
(their outer valence shell is not full). When current flows through an
electrical conductor, the electrons are the part of the atom that are moving
through the conductor.
You should remember:
1.Electrons are
negatively charged particles.
2.Electrons are
the particles which move when current flows.
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