Which of the Following Correctly Describes Electrons

Question

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.

Accepted Answer

Electrons are negatively charged particles that are involved in the chemical reactions between atoms. They are not neutral (option C is incorrect) and they can move from one energy level to another (options A and D are incorrect). Protons and neutrons have roughly the same mass, but electrons are much lighter (option E is incorrect).