Skandium
21
Sc
Groep
3
Periode
4
Blok
d
Protrone
Elektrone
Neutrone
21
21
24
Algemene Eienskappe
Atoom Nommer
21
Atoommassa
44,955912
Massa Nommer
45
Kategorie
Oorgangsmetale
Kleur
Silver
Radioaktief
Nee
From the Latin word Scandia, Scandinavia
Kristalstruktuur
Eenvoudige seshoekige
Geskiendenis
In 1879, Lars Fredrik Nilson and his team detected scandium in the minerals euxenite and gadolinite.
Nilson prepared 2 grams of scandium oxide of high purity.
Per Teodor Cleve showed that scandium had properties similar to those predicted by Mendeleev for eka-boron.
Metallic scandium was first prepared in 1937 by Fischer and his colleagues.
Nilson prepared 2 grams of scandium oxide of high purity.
Per Teodor Cleve showed that scandium had properties similar to those predicted by Mendeleev for eka-boron.
Metallic scandium was first prepared in 1937 by Fischer and his colleagues.
Elektrone per skil
2, 8, 9, 2
Elektronkonfigurasie
[Ar] 3d1 4s2
The stable form of scandium is created in supernovas via the r-process
Fisiese Eienskappe
Fase
Soliede
Digtheid
2,989 g/cm3
Smeltpunt
1814,15 K | 1541 °C | 2805,8 °F
Kookpunt
3109,15 K | 2836 °C | 5136,8 °F
Heat of Fusion
16 kJ/mol
Heat of Vaporization
318 kJ/mol
Spesifieke Hitte Kapasiteit
0,568 J/g·K
Oorvloed in die aardkors
0,0026%
Oorvloed in die heelal
3×10-6%
CAS Nommer
7440-20-2
PubChem CID Nommer
23952
Atomiese Eienskappe
Atoom radius
162 pm
Kovalente Radius
170 pm
Elektronegatiewiteit
1,36 (Pauling scale)
Ionisasie potensiaal
6,5615 eV
Atoom volume
15,0 cm3/mol
Termiese geleidingsvermoë
0,158 W/cm·K
Oksidasiestate
1, 2, 3
Toepassings
Scandium is used in sports equipment such as golf iron shafts, baseball bats, bicycle frames and fishing rods.
Scandium iodide, along with sodium iodide, when added to a modified form of mercury-vapor lamp, produces a form of metal halide lamp.
The radioactive isotope 46Sc is used in oil refineries as a tracing agent.
Scandium iodide, along with sodium iodide, when added to a modified form of mercury-vapor lamp, produces a form of metal halide lamp.
The radioactive isotope 46Sc is used in oil refineries as a tracing agent.
Scandium is considered to be of low toxicity
Isotope
Stabiele Isotope
45ScOnstabiele Isotope
36Sc, 37Sc, 38Sc, 39Sc, 40Sc, 41Sc, 42Sc, 43Sc, 44Sc, 46Sc, 47Sc, 48Sc, 49Sc, 50Sc, 51Sc, 52Sc, 53Sc, 54Sc, 55Sc, 56Sc, 57Sc, 58Sc, 59Sc, 60Sc