Tantalum

Tantalum, ₇₃Ta
Tantalum; tantalum·
Pabaosan	/ˈtæntələm/ (TAN-təl-əm)
Cingakan	klau pelung
Bobot atom standar Ar, std(Ta)	180.94788(2)
Tantalum ring tabél périodik
	hafnium ← tantalum → tungstén
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
Cecirén pisik
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)
Cecirén atom
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 tantalum
Cecirén liyanan
Rupa alami	primordial
Struktur kristal	kubus mapusat badan (bcc) ; α-Ta
Struktur kristal	tetragon ; 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
Karentanan magnétik molar	+154.0×10−6 cm3/mol (293 K)
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
Lelintihan
Panemuan	Anders Gustaf Ekeberg (1802)
Recognized as a distinct element by	Heinrich Rose (1844)
Isotop utama tantalum
β−	180W
	Kategori:Tantalum; cingak; pabligbagan; uah; \| pustaka

Tantalum silih tunggil datu kimia antuk simbol Ta miwah wilangan atom 73. Sadurungné kauningin antuk tantalium, kaaranin Tantalus, punika durjana saking mitologi Yunani.^[5] Tantalum punika logam langka, katos, pelung masawang klau, nyalang logam transisi sané sanget tahan korosi. Punika pahan saking seka logam tahan api, sané akéh kaanggén manados komponen minor ring paduan. Cecirén kimia tantalum ngardi manados lakaran sané maharga antuk piranti laboratorium, miwah manadoa panyilur platinum. Pawigunaan utama nyané sané mangkin punika kapasitor tantalum ring piranti éléktronik sekadi ponsél, Pamiteh DVD, sistem plaliyanan vidéo miwah komputer.

Pranala jaba

↑ 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.
↑ Euripidés, Oréstés

[CIAAW2013-1] 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.

[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., 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.

[4] Weast, Robert (1984). CRC, Handbook of Chemistry and Physics. Boca Raton, Florida: Chemical Rubber Company Publishing. pp. E110. ISBN 0-8493-0464-4.

[5] Euripidés, Oréstés

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Pengawasan otoritas
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