36 - Krypton noble gas
Discovered by William Ramsay in 1898
- Atomic Radius (Å)
Krypton (from Greek:κρυπτός kryptos "the hidden one") is a chemical element with symbol Kr and atomic number 36. It is a member of group 18 (noble gases) elements. A colorless, odorless, tasteless noble gas, krypton occurs in trace amounts in the atmosphere, is isolated by fractionally distilling liquefied air, and is often used with other rare gases in fluorescent lamps.
| Shell | Electrons | Orbitals |
|---|---|---|
| 1 | 2 | 2 in 1s |
| 2 | 8 | 2 in 2s + 6 in 2p |
| 3 | 18 | 2 in 3s + 6 in 3p + 10 in 3d |
| 4 | 8 | 2 in 4s + 6 in 4p |
83.8 u
Atomic Mass
1 Å
Atomic Radius
119.93 K
Boiling Point
1.16 Å
Covalent Radius
3.75e-3 g/cm³
Density
-9.60e+1
Electron Affinity
14 eV
First Ionization Energy
115.93 K
Melting Point
4
Number of Shells
8
Electron Valency
36
Atomic Number
2, 8, 18, 8
Electron Shell Occupations
