Unit 1 · Atomic Structure and Properties

Chapter 1.4

Reading the Periodic Table: Trends, Valence Electrons, and Ions

The periodic table is not a list; it is a map of how hard each atom holds its outer electrons. Read the map and you can predict which elements grab electrons, which give them up, and what ions they form.

lesson 4 of 45

By the end

  1. 01Explain trends in radius, ionization energy, electron affinity, and electronegativity with shielding and effective nuclear charge
  2. 02Estimate a missing property value from a column or row neighbor
  3. 03Predict the typical ionic charge of an element from its valence electron count
  4. 04Explain why elements in one column form analogous compounds

In unit 1

  1. 1.1Counting Atoms by Weighing: Moles, Molar Mass, and Mass Spectra
  2. 1.2What Is It Made Of: Empirical Formulas and the Composition of Mixtures
  3. 1.3Where the Electrons Are: Configurations and Photoelectron Spectroscopy
  4. 1.4Reading the Periodic Table: Trends, Valence Electrons, and Ions
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