Understanding the Actinides: Radioactive Metals in the Periodic Table

Actinides are a group of radioactive, metallic elements with atomic numbers greater than 89 (the atomic number of actinium). They are found in the bottom left corner of the periodic table and include elements such as thorium (Th), uranium (U), plutonium (Pu), and americium (Am). These elements are characterized by their radioactivity and are often used in nuclear reactors and weapons.

The name "actinide" comes from the Greek word "aktis," meaning "ray," which refers to the radiation emitted by these elements. The actinides are also sometimes referred to as the "acid earth" elements, due to their tendency to form compounds with acidic properties.

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