Rank the Following Elements in Order of Increasing Ionization Energy

Multiple Choice

Rank the following elements in order of increasing ionization energy: Ge, Rb, S, Ne

A) Ge < Rb < Ne < S
B) Rb < S < Ne < Ge
C) S < Ne < Ge < Rb
D) Rb < Ge < S < Ne
E) Rb < Ge < Ne < S