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Osmium (Os)
Atomic number: 76 · Category: transition metal · Group 8 · Period 6 · Phase: Solid
Osmium (from Greek osme (ὀσμή) meaning "smell") is a chemical element with symbol Os and atomic number 76. It is a hard, brittle, bluish-white transition metal in the platinum group that is found as a trace element in alloys, mostly in platinum ores. Osmium is the densest naturally occurring element, with a density of 22.59 g/cm3.
Atomic mass: 190.233
Density: 22.59
Melting point: 3306 K
Boiling point: 5285 K
Appearance: silvery, blue cast
Source: Wikipedia
Block: d
Molar heat: 24.7
CPK color:#266696
Electronic structure
Electron configuration: 1s2 2s2 2p6 3s2 3p6 4s2 3d10 4p6 5s2 4d10 5p6 6s2 4f14 5d6
Configuration (semantic): [Xe] 4f14 5d6 6s2
Shells: 2, 8, 18, 32, 14, 2
Electronegativity (Pauling): 2.2
Electron affinity: 103.99
Ionization energies: 840, 1600
Periodic position
Group: 8
Period: 6
xpos: 8
ypos: 6
Spectral/Bohr images
Image
3D Model