6 min read
This AP Chemistry study guide covers periodic trends, focusing on the organization of the periodic table (periods, groups, valence electrons), effective nuclear charge (Zeff), and five key trends: atomic radius, ionic radius, electronegativity, ionization energy, and electron affinity. It explains how these trends change across periods and down groups, providing examples and visuals.
Give us your feedback and let us know how we can improve
Question 1 of 12
đ Elements in the same period all have the same number of what?
Valence electrons
Protons
Electron shells
Neutrons