Tantalum, 73 Ta ngoi-kôn
gray blue Spectral lines of tantalum Kî-pún sin-sit Miàng, fù-ho
Tantalum, Ta ngoi-hìn
gray blue Tantalum chhai chû-khì-péu ke vi-chi
ngièn-chṳ́ sì-sú
73 ngièn-chṳ́-liòng (±)
180.94788(2)[1] ngièn-su lui-phe̍t
ko-thu kîm-su̍k Chhu̍k, fûn-khî
5 chhu̍k , d-block chû-khì
period 6 thien-chṳ́ phài-lie̍t
[Xe ] 4f14 5d3 6s2 per shell
2, 8, 18, 32, 11, 2 vu̍t-lî sin-chṳt Siông
ku-thí yùng-tiám
3290 K (3017 °C, 5463 °F) pui-tiám
5731 K (5458 °C, 9856 °F) Me̍t-thu near Sit-vûn
16.69 g·cm−3
15 g·cm−3 Yùng-fa-ngie̍t
36.57 kJ·mol−1 Chîn-fat-ngie̍t
753 kJ·mol−1 Ngie̍t-yùng-liong
25.36 J·mol−1 ·K−1
chîn-hi-ap
P (Pa)
1
10
100
1 k
10 k
100 k
chhai T (K)
3297
3597
3957
4395
4939
5634
Ngièn-chṳ́ sin-chṳt Yông-fa-su
5 , 4, 3, 2, 1, −1, −3 (a mildly acidic oxide) Thien-fu-sin
Pauling scale: 1.5 Thien-lì-nèn
1st: 761 kJ·mol−1 2nd: 1500 kJ·mol−1 Ngièn-chṳ́ pan-kang
empirical: 146 pm Khiung-ka pan-kang
170±8 pm Miscellanea Chîn-thí keu-chho
body-centered cubic (bcc)[2] α-Ta Chîn-thí keu-chho
tetragonal[2] β-Ta Sâng-suk thin rod
3400 m·s−1 (at 20 °C) Ngie̍t-phàng-chong
6.3 µm·m−1 ·K−1 (at 25 °C) Ngie̍t-chhòn-thô-li̍t
57.5 W·m−1 ·K−1 Thien-chú-li̍t
131 nΩ·m (at 20 °C) Chhṳ̀-sin
paramagnetic[3] Young's modulus
186 GPa Shear modulus
69 GPa Bulk modulus
200 GPa Poisson ratio
0.34 Mohs hardness
6.5 Vickers hardness
870–1200 MPa Brinell hardness
440–3430 MPa CAS Registry Number
7440-25-7 Le̍k-sú Fat-hien
Anders Gustaf Ekeberg (1802) Recognized as a distinct element by
Heinrich Rose (1844) Chui vún-thin ke thùng-vi-su
Chú vùn-chông: Tantalum ke thùng-vi-su
iso
NA
half-life
DM
DE (MeV)
DP
177 Ta
syn
56.56 h
ε
1.166
177 Hf
178 Ta
syn
2.36 h
ε
1.910
178 Hf
179 Ta
syn
1.82 y
ε
0.110
179 Hf
180 Ta
syn
8.125 h
ε
0.854
180 Hf
β−
0.708
180 W
180m Ta
0.012%
>2.0×1016 y
(ε)
180 Hf
(β− )
180 W
(IT)
180 Ta
(α)
176 Lu
181 Ta
99.988%
–
(α)
1.5259
177 Lu
182 Ta
syn
114.43 d
β−
1.814
182 W
183 Ta
syn
5.1 d
β−
1.070
183 W
Decay modes in parentheses are predicted, but have not yet been observed
Tantalum (Hon-ngî : 鉭 tǎn ) he yit-chúng fa-ho̍k ngièn-su , fa-ho̍k fù-ho vì Ta , ngièn-chṳ́ su-muk he 73 .
↑ Standard Atomic Weights 2013 . Commission on Isotopic Abundances and Atomic Weights
↑ 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., pian. (2005). "Magnetic susceptibility of the elements and inorganic compounds". CRC Handbook of Chemistry and Physics (PDF) (86th pán.). Boca Raton (FL): CRC Press. ISBN 0-8493-0486-5 . Archived from the original on 2011-03-03. 2018-06-10 chhà-khon .