Osmium (Os)

General Properties

Symbol Os
Atomic Number 76
Atomic Weight 190.23
Group
8 (iron family)
VIIIA (IUPAC), VIII (CAS)
Solid, Paramagnetic, Conductor, Transition Metal, Metal, Stable, Natural
Period 6
Block d

Physical Properties

Density 22.6 g/cm3
Atomic Volume 8.43 cm3/mole
Atomic Radius 1.35 angstroms
Covalent Radius --
Crust Abundance 1.8E-7%
Crystal Structure Hexagonal
Color Slate Gray

Energy

Electronegativity 2.2 (Pauling Scale)
Electron Affinity 106.1 kJ/mol
1st Ionization Energy 840 kJ/mol
2nd Ionization Energy 1600 kJ/mol
Specific Heat Capacity 0.13 J g−1 K−1
Thermal Conductivity 87.6 W·m−1·K−1

Electrons & Oxidation

Oxidation States +4,6,8
Electrons Per Shell 2 8 18 32 14 2
Electron Configuration [Xe] 4f14 5d6 6s2
1s2 2s2 2p6 3s2 3p6 3d10 4s2 4p6 4d10 5s2 5p6 4f14 5d6 6s2
Orbital Diagram
1s
↿⇂
2s
↿⇂
2p
↿⇂
↿⇂
↿⇂
3s
↿⇂
3p
↿⇂
↿⇂
↿⇂
3d
↿⇂
↿⇂
↿⇂
↿⇂
↿⇂
4s
↿⇂
4p
↿⇂
↿⇂
↿⇂
4d
↿⇂
↿⇂
↿⇂
↿⇂
↿⇂
4f
↿⇂
↿⇂
↿⇂
↿⇂
↿⇂
↿⇂
↿⇂
5s
↿⇂
5p
↿⇂
↿⇂
↿⇂
5d
↿⇂
↿ 
↿ 
↿ 
↿ 
5f
 
 
 
 
 
 
 
6s
↿⇂
6p
 
 
 
6d
 
 
 
 
 
6f
 
 
 
 
 
 
 

Nuclear

Radioactive No

Media

Planetary Bohr Model of Osmium (Os)
Description
Hard fine black powder or hard, lustrous, blue-white metal.
Uses
Used to tip gold pen points, instrument pivots, to make electric light filaments. Used for high temp. alloys and pressure bearings. Very hard and resists corrosion better than any other.
Sources
Obtained from the same ores as platinum.
Pronounciation (English)
OZ-mi-em

Translations

Afrikaans Osmium
Aragonese Osmio
العربية ازميوم
Armãneashte Osmiumu
asturianu Osmiu
azərbaycan dili Osmium
български Осмий
বাংলা অসমিয়াম
brezhoneg Osmiom
bosanski Osmij[um]
Byelorussian Осмій
Cebuano Osmyo
čeština Osmium
Chuvash Осми
Cymraeg Osmi
dansk Osmium
Deutsch Osmium
Ελληνικά Οσμιο
English Osmium
esperanto Osmio
español Osmio
eesti Osmium
euskara Osmioa
فارسی اوسمیم
suomi Osmium
føroyskt Osmium
français Osmium
furlan Osmi
West-Frysk Osmium
Gaeilge Oismiam
Gàidhlig Oismiam
galego Osmio
ગુજરાતી ઑસ્મિયમનો
Gaelg Osmium
Hakka Chinese Ngò (鋨)
עברית אוסמיום
हिन्दी अस्मियम
hrvatski Osmij
magyar Ozmium
հայերեն Օսմիում
Indonesia Osmium
íslenska Osmín
italiano Osmio
日本語 オスミウム
ქართული ოსმიუმი
کٲشُر Òsm
қазақ тілі Осмий
한국어 오스뮴
Kurdish Osmiyûm
Komi Осмий
kernewek Osmyum
кыргызча Осмий
Latin Osmium
Lëtzebuergesch Osmium
Lombard Òsmi
lingála Osumu
lietuvių Osmis
latviešu Osmijs
Mari Осмий
Maori Osmium
македонски Осмиум
മലയാളം ഓസ്മിയം
монгол Осми
Мокшан Осми
Bahasa Melayu Osmium
Malti Ożmju[m]
Nahuatl Osmio
Nederlands Osmium
norsk Osmium
Occitan Òsmi
ирон Осмий
polski Osm
português Ósmio
Runasimi Osmiyu
română Osmiu
русский Осмий
slovenčina Osmium
slovenščina Osmij
Samoan Osmimi
Samogitian Uosmis
shqip Osmium
српски Осмијум
Southern Sotho Osmiamo
svenska Osmium
Kiswahili Osmi
தமிழ் ஒஸ்மியம்
Tajik Осмий
ไทย ออสเมียม
Türkçe Osmiyum
ئۇيغۇرچە ئوسمىي
українська Осмій
o‘zbek Osmiy
Tiếng Việt Osimi, Osmi
Võro Osmium
中文

History

Discovered In
1803
Discovered By
Smithson Tennant
Discovered At
England
Word Origin
From the Greek word "osme" meaning "smell"