Tantal
73
Ta
Guruh
5
Davr
6
Block
d
Protonlar
Elektronlar
Neytronlar
73
73
108
General Properties
Atom raqami
73
Atom massasi
180,94788
Mass Number
181
Turkum
Oʻtish metallar
Ranggi
Gray
Radioaktivlik
Yoʻq
Named after Tantalos, a Greek mythological character, father of Niobe
Crystal Structure
Body Centered Cubic
Tarix
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.
Electrons per shell
2, 8, 18, 32, 11, 2
Elektron konfiguratsiyasi
[Xe] 4f14 5d3 6s2
Tantalum occurs principally in the mineral columbite-tantalite
Physical Properties
Phase
Qattiq modda
Zichlik
16,654 g/cm3
Erish harorati
3290,15 K | 3017 °C | 5462,6 °F
Qaynash harorati
5731,15 K | 5458 °C | 9856,4 °F
Heat of Fusion
36 kJ/mol
Heat of Vaporization
735 kJ/mol
Solishtirma issiqlik sigʻimi
0,14 J/g·K
Abundance in Earth's crust
0,00017%
Abundance in Universe
8×10-9%
CAS Number
7440-25-7
PubChem CID Number
23956
Atomic Properties
Atom radiusi
146 pm
Kovalentlik radiusi
170 pm
Elektrmanfiylik
1,5 (Poling boʻyicha)
Ionization Potential
7,5496 eV
Molyar hajm
10,90 cm3/mol
Issiqlik oʻtkazuvchanlik
0,575 W/cm·K
Oksidlanish darajasi
-1, 2, 3, 4, 5
Applications
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
Izotoplar
Barqaror izotoplar
181TaBeqaror 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