Tantalum

Tantalum, ₇₃Ta
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
	hafnium ← Tantalum → wolfram
ngièn-chṳ́ sì-sú	73
ngièn-chṳ́-liòng (±)	180.94788(2)
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
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) ; α-Ta
Chîn-thí keu-chho	tetragonal ; 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
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
	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.

Chhâm-kháu chṳ̂-liau[phiên-siá | kói ngièn-sṳ́-mâ]

↑ 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.

[IUPAC-1] Standard Atomic Weights 2013. Commission on Isotopic Abundances and Atomic Weights

[crystal_structure-2] 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.

[magnet-3] 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.

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