Sophia Learning
Sophia: Periodic Trends: Atomic Radius: Lesson 3
This lesson will explain how the atomic radius changes over representative elements across rows and up and down columns on the periodic table. It is 3 of 3 in the series titled "Periodic Trends: Atomic Radius."
Sophia Learning
Sophia: Periodic Trends: Ionization Energy: Lesson 3
This lesson will explain how the ionization energy changes over representative elements across rows and up and down columns on the periodic table. It is 3 of 3 in the series titled "Periodic Trends: Ionization Energy."
Sophia Learning
Sophia: Periodic Trends: Atomic Radius: Lesson 2
This lesson will explain how the atomic radius changes over representative elements across rows and up and down columns on the periodic table. It is 2 of 3 in the series titled "Periodic Trends: Atomic Radius."
Science Education Resource Center at Carleton College
Serc: Trends on the Periodic Table: Metals, Non Metals, and Metalloids
In this lab activity, young scholars will be asked to observe and then test the physical and chemical properties of several different elements.
Upper Canada District School Board
Tom Stretton's Chemistry Pages: The Chemistry of Period 3
Through an online slideshow format, learn about the chemistry behind Period 3 on the Periodic Table of Elements. The last slide has questions for students.
Texas Instruments
Texas Instruments: Setting the Trend
In this activity you will - Determine the trend in atomic radius for the periodic table. Determine the trend in first ionization energy for the periodic table. Determine the trend in electronegativity for the periodic table.
Simon Fraser University
Chem1 Virtual Textbook: Periodic Trends in Ion Formation
Acting as a subtopic of the General Chemistry Virtual Textbook's section on Atoms and the Periodic Table, this site discusses electron affinity and ionization energy in relation to ion formation. Charts and graphs are included as well.
Science Education Resource Center at Carleton College
Serc: Group and Periodic Properties Lab
Learners observe and perform experiments with sodium, potassium, calcium, magnesium, sulfur ,and phosphorus. The discover trends down groups, across periods, and having to do with the pH of metal oxides vs. nonmetal oxides.
Sophia Learning
Sophia: Electronegativity
Explore the concept of electronegativity and how it trends across the periodic table of elements. The author uses simple, humorous drawings to help with understanding.
Sophia Learning
Sophia: Periodic Trends: Atomic Radius: Lesson 1
This lesson will explain how the atomic 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 "Periodic Trends: Atomic Radius."
Sophia Learning
Sophia: Periodic Trends: Electron Affinity: Lesson 3
This lesson will explain how the electron affinity changes over representative elements across rows and up and down columns on the periodic table. It is 3 of 3 in the series titled "Periodic Trends: Electron Affinity."
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."
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.
Science Struck
Science Struck: Electronegativity Chart of Elements
Explains what electronegativity bonding is and presents a periodic table of elements that is color-coded to show electronegativity trends.
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...
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.
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.
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