neon-21

noun

A rare stable isotope of neon, 2110Ne, having ten protons and eleven neutrons; it amounts to less than 0.3% of the element in nature

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Meanings

nounneon-21 (uncountable)
  1. uncountablenatural sciencesA rare stable isotope of neon, 2110Ne, having ten protons and eleven neutrons; it amounts to less than 0.3% of the element in nature
Cite this entry
APA

neon-21. (n.d.). In WatkinsX Dictionary. Retrieved November 4, 2026, from https://dictionary.watkinsx.com/word/neon-21

MLA

“neon-21.” WatkinsX Dictionary, https://dictionary.watkinsx.com/word/neon-21. Accessed November 4, 2026.

Chicago

WatkinsX Dictionary, s.v. “neon-21,” accessed November 4, 2026, https://dictionary.watkinsx.com/word/neon-21.

Source: neon-21 on Wiktionary, CC BY-SA 4.0.