Skandij
21
Sc
Skupina
3
Perioda
4
Blok
d
Protoni
Elektroni
Nevtroni
21
21
24
Splošne lastnosti
Vrstno število
21
Atomska teža
44,955912
Masno število
45
Kategorija
Prehodne kovine
Barva
Srebrna
Radioaktivno
Ne
From the Latin word Scandia, Scandinavia
Kristalna struktura
Heksagonalna
Zgodovina
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.
Elektroni po lupinah
2, 8, 9, 2
Razporeditev elektronov
[Ar] 3d1 4s2
The stable form of scandium is created in supernovas via the r-process
Fizikalne lastnosti
Faza snovi
Trdnina
Gostota
2,989 g/cm3
Tališče
1814,15 K | 1541 °C | 2805,8 °F
Vrelišče
3109,15 K | 2836 °C | 5136,8 °F
Talilna toplota
16 kJ/mol
Izparilna toplota
318 kJ/mol
Toplotna kapaciteta
0,568 J/g·K
Zastopanost v Zemljini skorji
0,0026%
Zastopanost v vesolju
3×10-6%
CAS številka
7440-20-2
PubChem CID številka
23952
Atomske lastnosti
Atomski polmer
162 pm
Kovalentni polmer
170 pm
Elektronegativnost
1,36 (Paulingova lestvica)
Ionizacijski potencial
6,5615 eV
Atomski volumen
15,0 cm3/mol
Toplotna prevodnost
0,158 W/cm·K
Oksidacijska stanja
1, 2, 3
Uporabe
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
Izotopi
Stabilni izotopi
45ScNestabilni izotopi
36Sc, 37Sc, 38Sc, 39Sc, 40Sc, 41Sc, 42Sc, 43Sc, 44Sc, 46Sc, 47Sc, 48Sc, 49Sc, 50Sc, 51Sc, 52Sc, 53Sc, 54Sc, 55Sc, 56Sc, 57Sc, 58Sc, 59Sc, 60Sc