Group Definition

Chemistry Glossary Definition of Group

Periodic Table Close-Up
Periodic Table Close-Up. Daniel Hurst Photography/Getty Images
By
Anne Marie Helmenstine, Ph.D.
Anne Marie Helmenstine, Ph.D.
Chemistry Expert
  • Ph.D., Biomedical Sciences, University of Tennessee at Knoxville
  • B.A., Physics and Mathematics, Hastings College
Dr. Helmenstine holds a Ph.D. in biomedical sciences and is a science writer, educator, and consultant. She has taught science courses at the high school, college, and graduate levels.
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Updated on April 22, 2018
A period is a row of the periodic table.
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Understanding Periods in Chemistry
By Anne Marie Helmenstine, Ph.D.

Group Definition:

In chemistry, a group is a vertical column in the Periodic Table. Groups may be referred to either by number or by name. For example, Group 1 is also known as the Alkali Metals.

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Helmenstine, Anne Marie, Ph.D. "Group Definition." ThoughtCo, Jun. 25, 2024, thoughtco.com/definition-of-group-in-chemistry-604518. Helmenstine, Anne Marie, Ph.D. (2024, June 25). Group Definition. Retrieved from https://www.thoughtco.com/definition-of-group-in-chemistry-604518 Helmenstine, Anne Marie, Ph.D. "Group Definition." ThoughtCo. https://www.thoughtco.com/definition-of-group-in-chemistry-604518 (accessed July 20, 2024).