Definition

A radioactive metal that is part of the rare-earth elements, created from uranium or neodymium, and has various isotopes used for producing beta rays.

Example

Promethium is used in some types of batteries and luminous paints.

Conversation

Have you ever heard of the element promethium?

Yeah, I learned about it in my chemistry class last week.

That's interesting! I didn't know it was used for beta rays.

Right? It's pretty cool how these rare elements have such unique applications.

Synonyms & Antonyms

Root Explanation

Promethium is derived from the name 'Prometheus' (from Greek 'Promētheus', meaning forethought), who in mythology is known for stealing fire from the gods and giving it to humanity. The suffix '-ium' is commonly used in chemistry to denote metallic elements. Thus, 'promethium' refers to a metallic element named after Prometheus, symbolizing the gift of knowledge or enlightenment.

Memory Tip

Think of Prometheus, who had 'forethought' and brought fire to humanity, to remember that promethium is a metal named after him, symbolizing enlightenment.

Visually Confused Words