Electric waves are produced wherever electrons are accelerated or retarded, that is, whenever the velocity of an electron is changed or accelerated positively or negatively.
electrons orbit an atom
You just wrote your topic sentence. Read your question.
valence electrons are the electrons found in the outermost energy level of bohr diagram for an element.
electrons help form atoms
Atoms have electrons, protons, and neutrons.
not too
The electron cloud is the region surrounding an atomic nucleus where electrons are most likely to be found.
"The electron cloud is the space in the atom where the electrons orbit the nucleus."
An electron is part of an atom.The electron can hold an electric charge. Some atoms have only one electron.
an ion is an atom thats no longer neutral because it gained or has lost electrons.
Covalent compounds have shared electrons between atoms.
The particles in an atom are the protons, the neutrons, and the electrons.