Definition

The most common form of hydrogen, which has one proton and no neutrons, making it the lightest isotope of hydrogen.

Example

Protium is the simplest and most abundant isotope of hydrogen found in nature.

Conversation

Did you know that protium is the most common isotope of hydrogen?

Really? I didn't realize it was so abundant.

Yeah, it has an atomic mass of just one.

That's interesting! I always thought there were more types of hydrogen.

Synonyms & Antonyms

Root Explanation

Protium is derived from the Greek word "protos" (meaning first) and the suffix "-ium" (a common ending for elements). The term refers to the first and lightest isotope of hydrogen, thus indicating its primary status among hydrogen isotopes.

Memory Tip

Think of 'first' ('protos') to remember that 'protium' is the first and lightest form of hydrogen.

Visually Confused Words