# Ch 3: The Periodic Table

Watch video lessons and learn everything you've ever wanted to know about the periodic table. Take the quizzes that follow each lesson to make sure you understand all the components of the periodic table.

## The Periodic Table - Chapter Summary and Learning Objectives

The periodic table is something most people are at least familiar with. While not everyone knows how to read the chart or interpret the data that it shows, most people do know that it shows the elements and their symbols. You wouldn't be here, though, if you were only interested in a simple definition. No problem! We have some quick and engaging video lessons that will teach you the essentials about the periodic table. You can also ask our instructors if you have any questions about the lessons. In this chapter, you'll study:

• Why the periodic table is arranged as it is
• What relationships are shown by diagonal proximity
• How valence electrons and energy levels determine location on the table
• What ionization energy is
• How transition metals differ from main group metals

Video Objective
The Periodic Table: Properties of Groups and PeriodsLearn how the periodic table is arranged and why.
Valence Electrons and Energy Levels of Atoms of ElementsExamine the relationship between an element's location on the table and the number of valence electrons and energy levels in one of its atoms.
Atomic and Ionic Radii: Trends Among Groups and Periods of the Periodic TableExplain what atomic radii are and the trends in the table.
Ionization Energy: Trends Among Groups and Periods of the Periodic TableShow trends in ionization energy along the periodic table.
Electronegativity: Trends Among Groups and Periods of the Periodic TableExplore electronegativity and periodic trends.
The Diagonal Relationship, Metallic Character, and Boiling PointLook at various types of relationships, including boiling point trends and metallic properties.
Transition Metals vs. Main Group Elements: Properties and DifferencesDefine and examine main group elements and transition metals.

7 Lessons in Chapter 3: The Periodic Table
Test your knowledge with a 30-question chapter practice test
Chapter Practice Exam
Test your knowledge of this chapter with a 30 question practice chapter exam.
Not Taken
Practice Final Exam
Test your knowledge of the entire course with a 50 question practice final exam.
Not Taken

### Earning College Credit

Did you know… We have over 160 college courses that prepare you to earn credit by exam that is accepted by over 1,500 colleges and universities. You can test out of the first two years of college and save thousands off your degree. Anyone can earn credit-by-exam regardless of age or education level.