Krypton (Kr) Fun Facts
"The Hidden Hero, an elusive and noble hero, often mistaken for a superhero's one weakness."
The true essence of Krypton (Kr) on the molecular frontier.
Krypton is a colorless, odorless, tasteless inert gas.
Krypton is found in the high-intensity gas inside an airport runway light.
Krypton is the home planet of Superman � though the real element has no relation.
Revision Hub
Master the elements with smart drills and quick revision sheets.
Did You Know?
Its name comes from the Greek word 'kryptos', meaning 'the hidden one', because it was difficult to find and isolate.
Krypton is famously associated with Superman's home planet, although the real element has no connection to the comic book hero.
From 1960 to 1983, the official length of a meter was defined in terms of the wavelength of light emitted by krypton-86 atoms.
When an electric current is passed through krypton gas, it produces a smoky-white light, which is used in high-powered "halogen" headlights and photographic flashes.
Krypton is one of the rarest gases in the Earth's atmosphere, making up only about one part per million.