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36 - Krypton noble gas

Discovered by William Ramsay in 1898

Krypton

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
KryptonKr Electron 1 Electron 2 Electron 1 Electron 2 Electron 3 Electron 4 Electron 5 Electron 6 Electron 7 Electron 8 Electron 1 Electron 2 Electron 3 Electron 4 Electron 5 Electron 6 Electron 7 Electron 8 Electron 9 Electron 10 Electron 11 Electron 12 Electron 13 Electron 14 Electron 15 Electron 16 Electron 17 Electron 18 Electron 1 Electron 2 Electron 3 Electron 4 Electron 5 Electron 6 Electron 7 Electron 8
83.8  u Atomic Mass
1  Å Atomic Radius
120  K Boiling Point
1.16  Å Covalent Radius
0.00375  g/cm³ Density
−96 Electron Affinity
14  eV First Ionization Energy
116  K Melting Point
4 Number of Shells
8 Electron Valency
36 Atomic Number
2, 8, 18, 8 Electron Shell Occupations