Which of these items best describes the arrangement of electrons in an atom of sulfur? a. two electrons in its first energy level; eight electrons in its second energy level; six valence electrons in its outermost energy level b. two electrons in its first energy level; two electrons in its second energy level; eight electrons in its third energy level; four valence electrons in its outermost energy level c. two valence electrons in its first energy level; eight electrons in its second energy level; six electrons in its outermost energy level d. eight electrons in its first energy level; eight valence electrons in its outermost shell