Electron  orbitals.  Each orbital (volume of space where the electrons
   of  an  atom  are  most  likely  to  be  found)  holds  a maximum of 2
   electrons.  An  electron  shell  represents the average distance of an
   electron from the nucleus.
<lI> The first electron shell has one spherical (1s) orbital.
<lI> The  second  shell  has  one  larger  s  orbital  (2s)  plus three
dumbbellshaped orbitals (2p).
<lI> Neon has 10 electrons.