Periodic Table · element

Neon

Ne · Z 10

atomic number

10

atomic mass

20.18

notation

Ne

group

18: Helium/Neon

period

2

state0c

Gas

state20c

Gas

occurrence

Primordial

density

0.0008999

melting pt

-248.5

boiling pt

-246.08

discovered

1898

abundance

0.005

ore minerals

the atmosphere (18 ppm)

mined as

Not mined

extraction

Air separation; a by-product of very large oxygen plants, which is why Ukrainian steelworks once supplied most of it.

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From the All Periodical Elements database in Notion, last edited 2026-08-16. This page is the row, rendered by the build; nothing on it is written by hand.