Tantal
73
Ta
Grup
5
Periyot
6
Blok
d
Protonlar
Elektronlar
Nötronlar
73
73
108
Temel Özellikleri
Atom numarası
73
Atom ağırlığı
180,94788
Kütle Numarası
181
Kategori
Geçiş metalleri
Renk
Gri
Radyoaktif
Hayir
Named after Tantalos, a Greek mythological character, father of Niobe
Kristal yapısı
Hacim merkezli kübik
Tarihi
Tantalum was discovered in Sweden in 1802 by Anders Ekeberg in the minerals tantalite from Finland and yttrotantalite from Sweden.
Unfortunately, William Hyde Wollaston claimed Ekeberg's new element was actually niobium, which had also been discovered in 1802.
In 1846, German chemist Heinrich Rose finally proved beyond doubt that tantalum and niobium were different elements.
Unfortunately, William Hyde Wollaston claimed Ekeberg's new element was actually niobium, which had also been discovered in 1802.
In 1846, German chemist Heinrich Rose finally proved beyond doubt that tantalum and niobium were different elements.
Enerji seviyesi başına Elektronlar
2, 8, 18, 32, 11, 2
Elektron dizilimi
[Xe] 4f14 5d3 6s2
Tantalum occurs principally in the mineral columbite-tantalite
Fiziksel Özellikleri
Faz
Katı
Yoğunluk
16,654 g/cm3
Ergime noktası
3290,15 K | 3017 °C | 5462,6 °F
Kaynama noktası
5731,15 K | 5458 °C | 9856,4 °F
Ergime ısısı
36 kJ/mol
Buharlaşma ısısı
735 kJ/mol
Isı kapasitesi
0,14 J/g·K
Dünya kabuğundaki bulunulabilirliği
0,00017%
Evrendeki bulunulabilirliği
8×10-9%
CAS Numarası
7440-25-7
PubChem CID Numarası
23956
Atom Özellikleri
Atom yarıçapı
146 pm
Kovalent yarıçapı
170 pm
Elektronegatifliği
1,5 (Pauling ölçeği)
İyonlaşma enerjisi
7,5496 eV
Atomik Hacim
10,90 cm3/mol
Isıl iletkenlik
0,575 W/cm·K
Yükseltgenme seviyeleri
-1, 2, 3, 4, 5
Uygulamalar
Tantalum is used in the electronics industry for capacitors and high power resistors.
The high melting point and oxidation resistance lead to the use of the metal in the production of vacuum furnace parts.
Tantalum oxide is used to make special glass with high index of refraction for camera lenses.
The high melting point and oxidation resistance lead to the use of the metal in the production of vacuum furnace parts.
Tantalum oxide is used to make special glass with high index of refraction for camera lenses.
Tantalum is considered to be non-toxic
İzotoplar
Kararlı izotoplar
181TaKararsız izotoplar
155Ta, 156Ta, 157Ta, 158Ta, 159Ta, 160Ta, 161Ta, 162Ta, 163Ta, 164Ta, 165Ta, 166Ta, 167Ta, 168Ta, 169Ta, 170Ta, 171Ta, 172Ta, 173Ta, 174Ta, 175Ta, 176Ta, 177Ta, 178Ta, 179Ta, 180Ta, 182Ta, 183Ta, 184Ta, 185Ta, 186Ta, 187Ta, 188Ta, 189Ta, 190Ta