Atoms and elements. which of the following are correct statements about elements?
select all that apply.
a. an element is defined by the number of electrons in each of its atoms.
b. the reactivity of an atom depends primarily on its electronic structure.
c. the number of protons in a neutral atom is equal to the number of electrons.
d. electrons move along a clearly defined path in an atom.
e. each atom of an element has the same number of protons, neutrons, and electrons.