Neon was discovered in 1898 by Sir William Ramsay and his student Morris W. Travers. It is a noble gas with an atomic number of 10, a density of 0.000825 g/cm³, and melting and boiling points of -248.59°C and -246.046°C, respectively. The gas has a relative atomic mass of 20.180 and its electron configuration is [He] 2s2 2p6.

3. Neon was discovered by the Scottish scientist Sir William Ramsay (2 October 1852
– 23 July 1916) and one of his students, Morris W Travers (1872–1961) in 1898.

4. • Group 18 • Melting point
−248.59°C,
−415.46°F, 24.56 K
• Period 2 • Boiling point
−246.046°C,
−410.883°F, 27.104
K
• Block p
• Density (g
cm−3)
0.000825
• Atomic
number
10
• Relative
atomic mass
20.180
• State at 20°C Gas • Key isotopes 20Ne
• Electron
configuration
[He] 2s22p6
• CAS number 7440-01-9
• ChemSpider ID 22377
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