Scandium (Sc)

Propriétés générales

Symbole Sc
Numéro atomique 21
Masse atomique 44.955912
Groupe
3 (Famille du scandium)
IIIA (IUPAC), IIIB (CAS)
Solid, Conductor, Transition Metal, Metal, Stable, Natural
Période 4
Bloc d

Propriétés physiques

Densité 2.99 g/cm3
Volume atomique 15.0 cm3/mole
Rayon atomique 1.62 angstroms
Rayon de covalence 144 pm
Crust Abundance 0.0026%
Crystal Structure Hexagonal
Color Silver

Énergie

Électronégativité 1.4 (Échelle de Pauling)
Affinité électronique 18.1 kJ/mol
Énergie de première 633 kJ/mol
2e Ionization Energy 1235.0 kJ/mol
3e Ionization Energy 2388.6 kJ/mol
4e Ionization Energy 7090.6 kJ/mol
5e Ionization Energy 8843 kJ/mol
6e Ionization Energy 10679 kJ/mol
7e Ionization Energy 13310 kJ/mol
8e Ionization Energy 15250 kJ/mol
9e Ionization Energy 17370 kJ/mol
10e Ionization Energy 21726 kJ/mol
11e Ionization Energy 24102 kJ/mol
12e Ionization Energy 66320 kJ/mol
13e Ionization Energy 73010 kJ/mol
14e Ionization Energy 80160 kJ/mol
15e Ionization Energy 89490 kJ/mol
16e Ionization Energy 97400 kJ/mol
17e Ionization Energy 105600 kJ/mol
18e Ionization Energy 117000 kJ/mol
19e Ionization Energy 124270 kJ/mol
20e Ionization Energy 547530 kJ/mol
21e Ionization Energy 582163 kJ/mol
Capacité thermique 0.568 J g−1 K−1
Conductivité thermique 15.8 W·m−1·K−1

Électrons et Oxydation

États d’oxydation 3
Électrons par couche 2 8 9 2
Configuration électronique [Ar] 3d1 4s2
1s2 2s2 2p6 3s2 3p6 3d1 4s2
Diagrammes d’orbitales
1s
↿⇂
2s
↿⇂
2p
↿⇂
↿⇂
↿⇂
3s
↿⇂
3p
↿⇂
↿⇂
↿⇂
3d
↿ 
 
 
 
 
4s
↿⇂
4p
 
 
 
4d
 
 
 
 
 
4f
 
 
 
 
 
 
 

Nuclear

Radioactif Non

Média

Modèle planétaire de Bohr de Scandium (Sc)
Description
Fairly soft, silvery-white metal. Eighth most abundant 'rare earth' found in the earth's crust (5.0 ppm).
Uses
Scandium metal is used in some aerospace applications. Scandum oxide (Sc2O3) is used in the manufacture of high-intensity electric lamps. Scandium iodide (ScI3) is used in lamps that produce light having a color closely matching natural sunlight.
Sources
Occurs mainly in the minerals thortveitile (~34% scandium) and wiikite. Also in some tin and tungsten ores. Pure scandium is obtained as a by-product of uranium refining.
Pronounciation (English)
SKAN-di-em

Traductions

Afrikaans Skandium
Aragonese Escandio
العربية سكانديوم
Armãneashte Scandiumu
asturianu Escandiu
azərbaycan dili Skandium
български Скандий
বাংলা স্ক্যান্ডিয়াম
brezhoneg Skandiom
bosanski Skandij[um]
Byelorussian Скандый
Cebuano Eskandyo
čeština Skandium
Chuvash Сканди
Cymraeg Escandi
dansk Scandium, Skandium
Deutsch Skandium
Ελληνικά Σκανdιο
English Scandium
esperanto Skandio
español Escandio
eesti Skandium
euskara Eskandioa
فارسی اسکاندیم
suomi Skandium
føroyskt Skandium
français Scandium
furlan Scandi
West-Frysk Scandium
Gaeilge Scaindiam
Gàidhlig Scaindiam
galego Escandio
ગુજરાતી સ્કૅનડિયમનો
Gaelg Scandjum
Hakka Chinese Khong (鈧)
עברית סקנדיום
हिन्दी स्काण्डियम
hrvatski Skandij
magyar Szkandium
հայերեն Սկանդիում
Indonesia Skandium
íslenska Skandín
italiano Scandio
日本語 スカンジウム
ქართული სკანდიუმი
کٲشُر Skónd
қазақ тілі Скандий
한국어 스칸듐
Kurdish Skandiyûm
Komi Скандий
kernewek Scandyum
кыргызча Скандий
Latin Scandium
Lëtzebuergesch Skandium
Lombard Scandi
lingála Sekandu
lietuvių Skandis
latviešu Skandijs
Mari Скандий
Maori Scandium
македонски Скандиум
മലയാളം സ്കാന്‍ഡിയം
монгол Сканди
Мокшан Сканди
Bahasa Melayu Skandium
Malti Skandju[m]
Nahuatl Escandio
Nederlands Scandium
norsk Scandium
Occitan Escandi
ирон Скандий
polski Skand
português Escândio
Runasimi Iskandyu
română Scandiu
русский Скандий
slovenčina Skandium
slovenščina Skandij
Samoan Skandimi
Samogitian Skandis
shqip Skandium, ²Scandiumi
српски Скандијум
Southern Sotho Skandiamo
svenska Skandium
Kiswahili Skandi
தமிழ் ஸ்கண்டியம்
Tajik Скандий
ไทย สแคนเดียม
Türkçe Skandiyum
ئۇيغۇرچە سكاندىي
українська Скандій
o‘zbek Skandiy
Tiếng Việt Scandi
Võro Skandium
中文

Histoire

Découvert en
1879
Découvert par
Lars Fredrik Nilson
Découvert à/au/dans
Sweden
Étymologie
From the Latin word "Scandia" meaning "Scandinavia"