1. Home
  2. Education
  3. Chemistry

Actinides Definition - Chemistry Glossary Definition of Actinides

By Anne Marie Helmenstine, Ph.D., About.com Guide

Definition: Usually, the actinides are considered to be elements 90 (thorium) through 103 (lawrencium). Otherwise, the actinides are defined according to their common properties.
Examples:
thorium, uranium, plutonium

Return to the Chemistry Glossary Index

A B C D E F G H I J K L M N O P Q R S T U V W X Y Z

Explore Chemistry

About.com Special Features

A Smarter Future

Tips that will help finance your education, excel in the classroom, and advance your career. More >

How to Ace the GRE

Being well prepared is the first step; here are more essential suggestions. More >

  1. Home
  2. Education
  3. Chemistry
  4. Facts & Pictures
  5. Dictionaries & Glossaries
  6. Actinides Definition - Chemistry Glossary Definition of Actinides>

©2009 About.com, a part of The New York Times Company.

All rights reserved.