Tantalum, 73 Ta Pabaosan (TAN -təl-əm ) Cingakan klau pelung Bobot atom standar A r, std (Ta) 7002180947880000000♠ 180.94788 (2)[ 1]
Wilangan atom (Z ) 73 Watek golongan 5 Période période 6 Blok blok-d Konpigurasi éléktron [Xé ] 4f14 5d3 6s2 Éléktron per kulit 2, 8, 18, 32, 11, 2 Pase ring STP padet Titik lebur 3290 K (3017 °C, 5463 °F) Titik didih 5731 K (5458 °C, 9856 °F) Kapadetan (nampek s.r. ) 16.69 g/cm3 ri kala éncéh (ring t.l. ) 15 g/cm3 Panes fusi 36.57 kJ/mol Panes panguapan 753 kJ/mol Kapasitas panes molar 25.36 J/(mol·K) Tekanan uap
P (Pa)
1
10
100
1 k
10 k
100 k
at T (K)
3297
3597
3957
4395
4939
5634
Paindikan oksidasi −3, −1, 0, +1, +2, +3, +4, +5 (oksida asam tenga) Kaéléktronégatipan skala Pauling: 1.5 Wasa ionisasi ka-1: 761 kJ/mol ka-2: 1500 kJ/mol Jeriji atom émpiris: 146 pm Jeriji kovalén 170±8 pm Garis spéktral saking tantalumRupa alami primordial Struktur kristal kubus mapusat badan (bcc)[ 2] α-Ta Struktur kristal tetragon [ 2] β-Ta Kagelisan swara pales tipis 3400 m/s (ring 20 °C) Ékspansi térmal 6.3 µm/(m⋅K) (ring 25 °C) Konduktivitas térmal 57.5 W/(m⋅K) Resistivitas listrik 131 nΩ⋅m (ring 20 °C) bacakan magnétik paramagnetic [ 3] Karentanan magnétik molar 6996154000000000000♠ +154.0× 10−6 cm3 /mol (293 K)[ 4] Modulus Young 186 GPa Modulus Shear 69 GPa Modulus Bulk 200 GPa Rasio Poisson 0.34 Kakatosan Mohs 6.5 Kakatosan Vickers 870–1200 MPa Kakatosan Brinell 440–3430 MPa Nomor CAS 7440-25-7 Panemuan Anders Gustaf Ekeberg (1802) Recognized as a distinct element by Heinrich Rose (1844)
Kategori:Tantalum | pustaka
Ta:
ring
itung saking C
bina
parihindik
pus
C
3017
—
—
K
3290
3290
0
F
5463
5463
0
présisi maks
0
WD
5.425 5.425
[ 5]
dagingan
C: 3017, K: 3290, F: 5463
pabligbagan
Ta:
ring
itung saking C
bina
parihindik
pus
C
5458
—
—
K
5731
5731
0
F
9856
9856
0
présisi maks
0
WD
9.797 9.797
[ 5]
dagingan
C: 5458, K: 5731, F: 9856
pabligbagan
Pustaka
Pustaka pacang tampil ring suratan, menawi lis puniki wantah tampil ring kaca puniki.
↑ Méija, Juris; et al. (2016). "Atomic weights of the elements 2013 (IUPAC Technical Report)". Pure and Applied Chemistry . 88 (3): 265–91. doi :10.1515/pac-2015-0305 .
↑ 2,0 2,1 Moseley, P. T.; Seabrook, C. J. (1973). "The crystal structure of β-tantalum". Acta Crystallographica Section B: Structural Crystallography and Crystal Chemistry . 29 (5): 1170–1171. doi :10.1107/S0567740873004140 .
↑ Lide, D. R., ed. (2005). "Magnetic susceptibility of the elements and inorganic compounds". CRC Handbook of Chemistry and Physics (PDF) (édisi ka-86th). Boca Raton (FL): CRC Press. ISBN 0-8493-0486-5 .
↑ Weast, Robert (1984). CRC, Handbook of Chemistry and Physics . Boca Raton, Florida: Chemical Rubber Company Publishing. pp. E110. ISBN 0-8493-0464-4 .
↑ 5,0 5,1 http://www.cdc.gov/niosh/npg/npgd0585.html .