An atom of oxygen has 8 protons, 8 neutrons, and 8 electrons. How would you expect the electrons to be "arranged" in this atom?
a) All eight electrons in the nucleus
b) All eight electrons in the outermost shell
c) All eight electrons in the shell nearest the nucleus
d) Two electrons in the shell nearest the nucleus: six electrons in the second shell
e) Six electrons in the shell nearest the nucleus: two electrons in the second shell