Skandij

21
Sc
Skupina
3
Perioda
4
Blok
d
Protons
Electrons
Neutrons
21
21
24
General Properties
Vrstno število
21
Atomska teža
44,955912
Mass Number
45
Kategorija
Prehodne kovine
Barva
Silver
Radioactive
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.
Electrons per shell
2, 8, 9, 2
Razporeditev elektronov
[Ar] 3d1 4s2
Sc
The stable form of scandium is created in supernovas via the r-process
Physical Properties
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
Abundance in Earth's crust
0,0026%
Abundance in Universe
3×10-6%
Ultrapure
Zasluge za slike: Images-of-elements
Ultrapure crystalline scandium
CAS Number
7440-20-2
PubChem CID Number
23952
Atomic Properties
Atomski polmer
162 pm
Kovalentni polmer
170 pm
Elektronegativnost
1,36 (Paulingova lestvica)
Ionization Potential
6,5615 eV
Atomic Volume
15,0 cm3/mol
Toplotna prevodnost
0,158 W/cm·K
Oksidacijska stanja
1, 2, 3
Applications
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 is considered to be of low toxicity
Isotopes
Stable Isotopes
45Sc
Unstable Isotopes
36Sc, 37Sc, 38Sc, 39Sc, 40Sc, 41Sc, 42Sc, 43Sc, 44Sc, 46Sc, 47Sc, 48Sc, 49Sc, 50Sc, 51Sc, 52Sc, 53Sc, 54Sc, 55Sc, 56Sc, 57Sc, 58Sc, 59Sc, 60Sc