Sophia Learning
Sophia: Period Trends: Ionic Size: Lesson 1
This lesson will explain how the ionic radius changes over representative elements across rows and up and down columns on the periodic table. It is 1 of 3 in the series titled "Period Trends: Ionic Size."
Curated OER
Effective Nuclear Charge Periodic Trends
Acting as a subtopic of the General Chemistry Virtual Textbook's section on Atoms and the Periodic Table, this site discusses the properties of the atoms individually in relation to the main group elements of the Periodic Table.
Curated OER
Covalent Atomic Radii Periiodic Trends
Acting as a subtopic of the General Chemistry Virtual Textbook's section on Atoms and the Periodic Table, this site discusses the properties of the atoms individually in relation to the main group elements of the Periodic Table.
Curated OER
Ionic Radii Periiodic Trends
Acting as a subtopic of the General Chemistry Virtual Textbook's section on Atoms and the Periodic Table, this site discusses the properties of the atoms individually in relation to the main group elements of the Periodic Table.
Curated OER
Ionization Energies Periiodic Trends
Acting as a subtopic of the General Chemistry Virtual Textbook's section on Atoms and the Periodic Table, this site discusses the properties of the atoms individually in relation to the main group elements of the Periodic Table.
Curated OER
Electron Affinities Periiodic Trends
Acting as a subtopic of the General Chemistry Virtual Textbook's section on Atoms and the Periodic Table, this site discusses the properties of the atoms individually in relation to the main group elements of the Periodic Table.
CK-12 Foundation
Ck 12: Chemistry: Electron Affinity
[Free Registration/Login may be required to access all resource tools.] Covers the definition of electron affinity and trends in electron affinity.
Ohio State University
Ohio State University: Electron Affinity
This page describes electron affinity and the periodic trends of the elements according to their positions on the periodic table.
Other
University of Texas: Tabled Discussion
At this University of Texas site, atomic orbital occupancy, quantum numbers, the Aufbau Principle, and periodic trends are described in detail.
Wikimedia
Wikipedia: Electronegativity
This encyclopedia article from Wikipedia gives a definition for what electronegativity is, information on the two scales of electronegativity that are in common use (Pauling and Mulliken Scales), and a discussion on electronegativity...