Argon, krypton and xenon are very unreactive. They replace the air inside the lamp, preventing the metal wire from burning away.

Argon, krypton and xenon are very unreactive. They replace the air inside the lamp, preventing the metal wire burning away.

Like all noble gases ... as closed-shell elements remained undiscovered until Lord Rayleigh and William Ramsey isolated argon in 1894. Remarkably, Ramsey then went on to isolate helium (1895 ...

(The helium-neon laser emits on neutral neon lines.) A pulsed xenon ion laser, with somewhat different characteristics than other noble gas ion lasers, is described briefly in Chap. 16. The prime ...

Realising that their missing lighter element should actually have a lower boiling point than argon, they looked again at some of the more volatile fractions ... This is not surprising since xenon is ...