Which of the following correctly describes electrons?
A) An electron can move from one shell to another only if the energy the electron gains is greater than the difference in energy between the energy levels of the two shells.
B) Electrons are involved in the chemical reactions between atoms.
C) Electrons are neutral.
D) Electrons can move from the nucleus to higher energy levels when they absorb energy.
E) Protons, neutrons and electrons have equal mass.
Correct Answer:
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A)
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