Core
Periodicity: Ionization Energy & Electron Affinity
Slide 23 of 28
Practice Questions
5. For each pair state which one require more energy to remove
an electron from and why.
i)
Na and Al ii) C and Si
iii)
Ne and Na iv) Mg and Mg+
–v) F- and F
vi) Cl- and Ar
–vii) Be2+ and F- viii) S2- and Cl-
–ix) K+ and Ca2+ x) Rb+ and Kr
xi)
S2- and S- xii)
Ca2+ and Ca+