Elements / 36
36Kr83.798
Krypton
Noble gas · p-block · ring N · spoke 18
Krypton is element 36, a noble gas. It sits on ring N (period 4) on spoke 18, the noble gases. Follow that spoke toward the center and out again to find its chemical relatives.
Properties
| Density | 3.75 g/L (as a gas) | Terrain → |
|---|---|---|
| Melting point | 116 K · -157 °C | Terrain → |
| Boiling point | 120 K · -153 °C | Terrain → |
| Electronegativity | 3.005th most electronegative of 100 | Terrain → |
| First ionization energy | 1,351 kJ/mol6th highest ionization energy of 103 | Terrain → |
| Atomic weight | 83.7982 u | Terrain → |
| Crustal abundance | 1.0 × 10⁻⁴ ppm | Terrain → |
| Discovered | 1898 | Terrain → |
Values from open reference data; see sources. "Terrain" opens that property as a 3D landscape across the whole spiral.
Two things you might not know
- From 1960 to 1983 the metre was defined as 1,650,763.73 wavelengths of light from one of its isotopes.
- Ramsay and Travers found it in 1898 in liquid air residue, and its name is Greek for the hidden one. Starlink thrusters use it.
Checked against en.wikipedia.org.
Spoke 18: Noble gases
Ring N (period 4)
Play with Krypton
Watch it fly into its seat, or raise the whole spiral into a landscape and see where it peaks.