Connecting Chemistry

Krypton

Atomic symbol: Kr
Atomic number: 36
Atomic mass: 83.80

Appearance: Colorless gas at 25°C

Group: 0 / 18
Period: 4
Series: Noble gases
Block: p
Electron configuration: 1s² 2s² 2p⁶ 3s² 3p⁶ 3d¹⁰ 4s² 4p⁶

Used in fluorescent lighting since it exhibits a whitish glow in an electric field.

Solid kryptonite is white and crystalline.

Fun Fact! Krypton is named after the Ancient Roman ‘kryptos’, meaning “the hidden one”, in keeping with its properties as a colorless, odorless, tasteless, chemical inert gas, that make it hard to detect.

https://www.livescience.com/32076-krypton.html#:~:text=It's%20not%20just%20Superman's%20home,to%20reactions%20with%20other%20elements.