Skandium

21
Sc
Kumpulan
3
Kala
4
Blok
d
Proton
Elektron
Neutron
21
21
24
Ciri-Ciri Am
Nombor atom
21
Berat atom
44.955912
Nombor jisim
45
Kategori
Logam peralihan
Warna
Perak
Radioaktif
Tidak
From the Latin word Scandia, Scandinavia
Struktur hablur
Hexagonal Ringkas
Sejarah
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.
Bilangan elektron per petala
2, 8, 9, 2
Konfigurasi elektron
[Ar] 3d1 4s2
Sc
The stable form of scandium is created in supernovas via the r-process
Ciri-Ciri Fizikal
Fasa
Pepejal
Ketumpatan
2.989 g/cm3
Takat lebur
1814.15 K | 1541 °C | 2805.8 °F
Takat didih
3109.15 K | 2836 °C | 5136.8 °F
Haba pelakuran
16 kJ/mol
Haba pengewapan
318 kJ/mol
Muatan haba molar
0.568 J/g·K
Banyak pada kerak bumi
0.0026%
Banyak pada alam semesta
3×10-6%
Ultrapure
Kredit imej: Images-of-elements
Ultrapure crystalline scandium
Nombor CAS
7440-20-2
PubChem CID Number
23952
Ciri-Ciri Atom
Jejari atom
162 pm
Jejari kovalen
170 pm
Keelektronegatifan
1.36 (Skala Pauling)
Kebolehan mengion
6.5615 eV
Isipadu atom
15.0 cm3/mol
Daya pengaliran terma
0.158 W/cm·K
Keadaan pengoksidaan
1, 2, 3
Aplikasi
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
Isotop
Isotop stabil
45Sc
Isotop tidak stabil
36Sc, 37Sc, 38Sc, 39Sc, 40Sc, 41Sc, 42Sc, 43Sc, 44Sc, 46Sc, 47Sc, 48Sc, 49Sc, 50Sc, 51Sc, 52Sc, 53Sc, 54Sc, 55Sc, 56Sc, 57Sc, 58Sc, 59Sc, 60Sc