Holmium (Ho)

Propriétés générales

Symbole Ho
Numéro atomique 67
Masse atomique 164.93032
Groupe
(Lanthanides)
Solid, Paramagnetic, Conductor, Lanthanide, Stable, Natural
Période 6
Bloc f

Propriétés physiques

Densité 8.8 g/cm3
Volume atomique 18.7 cm3/mole
Rayon atomique 1.79 angstroms
Rayon de covalence --
Crust Abundance 0.00012%
Crystal Structure Hexagonal
Color Silver

Énergie

Électronégativité 1.2 (Échelle de Pauling)
Affinité électronique 50 kJ/mol
Énergie de première 581 kJ/mol
2e Ionization Energy 1140 kJ/mol
3e Ionization Energy 2204 kJ/mol
4e Ionization Energy 4100 kJ/mol
Capacité thermique 0.165 J g−1 K−1
Conductivité thermique 16.2 W·m−1·K−1

Électrons et Oxydation

États d’oxydation 3
Électrons par couche 2 8 18 29 8 2
Configuration électronique [Xe] 4f11 6s2
1s2 2s2 2p6 3s2 3p6 3d10 4s2 4p6 4d10 5s2 5p6 4f11 6s2
Diagrammes d’orbitales
1s
↿⇂
2s
↿⇂
2p
↿⇂
↿⇂
↿⇂
3s
↿⇂
3p
↿⇂
↿⇂
↿⇂
3d
↿⇂
↿⇂
↿⇂
↿⇂
↿⇂
4s
↿⇂
4p
↿⇂
↿⇂
↿⇂
4d
↿⇂
↿⇂
↿⇂
↿⇂
↿⇂
4f
↿⇂
↿⇂
↿⇂
↿⇂
↿ 
↿ 
↿ 
5s
↿⇂
5p
↿⇂
↿⇂
↿⇂
5d
 
 
 
 
 
5f
 
 
 
 
 
 
 
6s
↿⇂
6p
 
 
 
6d
 
 
 
 
 
6f
 
 
 
 
 
 
 

Nuclear

Radioactif Non

Média

Modèle planétaire de Bohr de Holmium (Ho)
Représentation de Lewis de Holmium (Ho)
Description
Fairly soft, malleable, lustrous, silvery metal.
Uses
It has very few practical applications; however, it has some unusual magnetic properties that offer some hope for future applications.
Sources
Occurs in gadolinite. Most often from monazite which is often 50% rare earth and typically 0.05% holmium.
Pronounciation (English)
HOLE-mi-em

Traductions

Afrikaans Holmium
Aragonese Olmio
العربية هلميوم
Armãneashte Holmiumu
asturianu Holmiu
azərbaycan dili Holmium
български Холъмий
বাংলা হলমিয়াম
brezhoneg Holmiom
bosanski Holmij[um]
Byelorussian Гольмій
Cebuano Holmyo
čeština Holmium
Chuvash Голъми
Cymraeg Holmi
dansk Holmium
Deutsch Holmium
Ελληνικά Όλμιο
English Holmium
esperanto Holmio
español Hólmio
eesti Holmium
euskara Holmioa
فارسی هولمیم
suomi Holmium
føroyskt Holmium
français Holmium
furlan Olmi
West-Frysk Holmium
Gaeilge Hoilmiam
Gàidhlig Hoilmiam
galego Holmio
ગુજરાતી હોમિયમનો
Gaelg Holmium
Hakka Chinese Fó (鈥)
עברית הולמיום
हिन्दी होल्मियम
hrvatski Holmij
magyar Holmium
հայերեն Հոլմիում
Indonesia Holmium
íslenska Holmín
italiano Olmio
日本語 ホルミウム
ქართული ჰოლმიუმი
کٲشُر Hòlm
қазақ тілі Голъмий
한국어 홀뮴
Kurdish Holmiyûm
Komi Голъмий
kernewek Holmyum
кыргызча Голъмий
Latin Holmium
Lëtzebuergesch Holmium
Lombard Úlmi
lingála Olimu
lietuvių Holmis
latviešu Holmijs
Mari Голъмий
Maori Holmium
македонски Холмиум
മലയാളം ഹോമിയം
монгол Гольми
Мокшан Холми
Bahasa Melayu Holmium
Malti Holmjum, ²Olmju
Nahuatl Holmio
Nederlands Holmium
norsk Holmium
Occitan Òlmi
ирон Голъмий
polski Holm
português Hólmio
Runasimi Holmyu
română Holmiu
русский Гольмий
slovenčina Holmium
slovenščina Holmij
Samoan Holmimi
Samogitian Holmis
shqip Holmium
српски Холмијум
Southern Sotho Holmiamo
svenska Holmium
Kiswahili Homi
தமிழ் ஹொல்மியம்
Tajik Голъмий
ไทย โฮลเมียม
Türkçe Holmiyum
ئۇيغۇرچە گولمىي
українська Голъмій
o‘zbek Golmiy
Tiếng Việt Holmi, Honmi
Võro Holmium
中文

Histoire

Découvert en
1878
Découvert par
J. L. Soret and Delafontaine
Découvert à/au/dans
Switzerland
Étymologie
From the Greek word "Holmia" meaning "Sweden"