10. Periodic Properties of the Elements - Part 3 of 3

10. Periodic Properties of the Elements / Periodic Trend: Ionization Energy / Problem 2

Rank the following elements in order of their first ionization energy, from lowest to greatest: Ca, Ge, Br, Ga, Se.

Ga < Ca < Ge < Se < Br

Ca < Ga < Br < Ge < Se

Se < Br < Ge < Ga < Ca

Se < Ge < Br < Ga < Ca