The arrangement of electrons in an atom is called (1) ______________________.Electrons in an atom tend to assume the arrangement that gives the atom the(2) ____________ possible energy. This arrangement of electrons is the most(3) ____________ arrangement and is called the atom’s (4) _________________________________________. Three (3) rules define how electrons can be arranged in an atom’s orbitals. The (5) ________________________ states that each electron occupies the lowest energy orbital available. (6) ________________________ states that maximum of 2 electrons may occupy a single atomic orbital, but only if the electrons have opposite (7) ____________. And (8) ________________________ states that single electrons with the same spin must occupy each equal-energy orbital before additional electrons with opposite spins occupy the same orbitals.