AP Chemistry/Periodicity

• Electronegativity - increases from bottom left to top right

Ionization Energy

Ionization Energy is the energy required to remove an electron from a gaseous atom or ion.

The first ionization energy is the energy required to remove one of the highest-energy electrons from an atom. In general, first ionization energy increases across a period and decreases down a group. In other words, it increases from bottom-left to top-right.

AP Chemistry

The Basics · Periodicity · Solids and Liquids · Gasses · Reactions · Stoichometry · Thermodynamics · Solutions · Acids and Bases · Equilibrium · Electrochemistry · Nuclear Chemistry · Organic Chemistry

Appendix

Constants and Equations · About the AP Exam