Neutronium

Rarity: Uncommon

A topic a little better known than average, read and translated beyond its own country.

Rarity follows how well known the article is: its views on the French and English Wikipedia over a year, and the number of languages it exists in.

At a glance

Class

Notion

Domain

Science and technology

In collections

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What Wikipedia says

Neutronium (or element zero) is a hypothetical element built solely from neutrons. The word was coined by scientist Andreas von Antropoff in 1926 for the hypothetical "element of atomic number zero" (with no protons in its nucleus) that he placed at the head of the periodic table (denoted by -).

Excerpt from the Wikipedia article “Neutronium”, under the CC BY-SA 4.0 license. Read the article on Wikipedia

Image: Casey Reed - Penn State University, Public domain, via Wikimedia Commons.