Choose the answer in which the three atoms and/or ions are listed in order of increasing EXPECTED size (smallest particle listed first) assuming that the simple shell model of the atom is correct. (Neglect quantum, relativistic and other advanced considerations.)
a) Cl - < S2- < Ar
b) Ar < Cl - < S2-
c) Ar < S2- < Cl -
d) Cl - < Ar < S2-
e) S2- < Cl - < Ar