Nuclear Chemistry

noun a series of chemically similar metallic elements with atomic numbers ranging from 89 to 103, found in the actinide series of the periodic table

• Actinides are a series of chemical elements in the periodic table that are radioactive.
• I learned about actinides in my chemistry class, they're pretty interesting.
• Actinides are like the rockstars of the periodic table, always causing a stir.
• The actinides are like the rebels of the periodic table, breaking all the rules with their radioactive properties.

noun a radioactive metallic element that is a member of the actinide series, used in nuclear reactors and bombs

• Actinouranium is a radioactive element with atomic number 92.
• Have you heard about actinouranium? It's a really cool radioactive element.
• I wouldn't mess with actinouranium if I were you, it's pretty dangerous stuff.
• Her words were like actinouranium, causing a reaction wherever they landed.