The Chemical Properties of Elements Are Determined Primarily by

The chemical properties of elements are determined primarily by

A) the number and arrangement of electrons in the highest energy level of the atom (the outermost electron shell) .
B) the number of neutrons in the nucleus.
C) the number and arrangement of electrons in the lowest energy level of the atom (the innermost electron shell) .
D) the ability of the electrons to change to a different orbital.
E) the type of bonds formed in the electron orbitals.