Tantalum

hafniumtantalumtungsten
Nb

Ta

Db
Appearance
gray blue
General properties
Name, symbol, numbertantalum, Ta, 73
Pronunciationm/
TAN-təl-əm;
previously m/
TAL-ee-əm
Element categorytransition metal
Group, period, block5, 6, d
Standard atomic weight180.94788 g/mol
Electron configuration[Xe] 4f14 5d3 6s2
Electrons per shell2, 8, 18, 32, 11, 2 (Image)
Physical properties
Phasesolid
Density (near r.t.)16.69 g/cm3
Liquid density at m.p.15 g/cm3
Melting point3290 K, 3017 °C, 5463 °F
Boiling point5731 K, 5458 °C, 9856 °F
Heat of fusion36.57 kJ/mol
Heat of vaporization732.8 kJ/mol
Specific heat capacity(25 °C) 25.36 J/(mol·K)
Vapor pressure
P (Pa)1101001 k10 k100 k
at T (K)329735973957439549395634
Atomic properties
Oxidation states5, 4, 3, 2, -1 (mildly acidic oxide)
Electronegativity1.5 (Pauling scale)
Ionization energies1st: 761 kJ/mol
2nd: 1500 kJ/mol
Atomic radius146 pm
Covalent radius170±8 pm
Miscellanea
Crystal structurebody-centered cubic
Crystal structure noteα-Ta
Magnetic orderingparamagnetic[1]
Electrical resistivity(20 °C) 131 nΩ·m
Thermal conductivity(300 K) 57.5 W/(m·K)
Thermal expansion(25 °C) 6.3 µm/(m·K)
Speed of sound (thin rod)(20 °C) 3400 m/s
Young's modulus186 GPa
Shear modulus69 GPa
Bulk modulus200 GPa
Poisson ratio0.34
Mohs hardness6.5
Vickers hardness873 MPa
Brinell hardness800 MPa
CAS registry number7440-25-7
Most stable isotopes
Main article: Isotopes of tantalum
isoNAhalf-lifeDMDE (MeV)DP
177Tasyn56.56 hε1.166177Hf
178Tasyn2.36 hε1.910178Hf
179Tasyn1.82 yε0.110179Hf
180Tasyn8.125 hε0.854180Hf
0.708180W
180mTa0.012%>1.2×1015 yε0.929180Hf
0.783180W
IT0.075180Ta
α2.103176Lu
181Ta99.988%181Ta is stable with 108 neutrons
182Tasyn114.43 d1.814182W
183Tasyn5.1 d1.070183W
Tantalum in a glass tube

Tantalum is a chemical element. Tantalum was named tantalium. It has the chemical symbol Ta. It has the atomic number 73. It is a rare metal. It is hard and blue-gray. In chemistry it is placed in a group of metal elements named the transition metals.

Tantalum does not easily corrode. It is found in the mineral tantalite.

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Other Languages
Afrikaans: Tantaal
አማርኛ: ታንታለም
العربية: تانتالوم
aragonés: Tantal
armãneashti: Tantalu
azərbaycanca: Tantal
Bân-lâm-gú: Tantalum
беларуская: Тантал
беларуская (тарашкевіца)‎: Танталь
भोजपुरी: टैंटलम
български: Тантал (елемент)
བོད་ཡིག: ཊན་ཊ་ལམ།
bosanski: Tantal
brezhoneg: Tantalom
català: Tàntal
Cebuano: Tantalyo
čeština: Tantal
corsu: Tantaliu
Cymraeg: Tantalwm
dansk: Tantal
Deutsch: Tantal
eesti: Tantaal
Ελληνικά: Ταντάλιο
English: Tantalum
Esperanto: Tantalo
euskara: Tantalo
فارسی: تانتال
Fiji Hindi: Tantalum
français: Tantale (chimie)
furlan: Tantali
Gaeilge: Tantalam
Gaelg: Tantalum
Gàidhlig: Tantalum
galego: Tántalo
ગુજરાતી: ટેન્ટેલમ
客家語/Hak-kâ-ngî: Tantalum
хальмг: Тантал
한국어: 탄탈럼
հայերեն: Տանտալ
हिन्दी: टैंटेलम
Ido: Tantalo
Bahasa Indonesia: Tantalum
interlingua: Tantalo
íslenska: Tantal
italiano: Tantalio
עברית: טנטלום
Basa Jawa: Tantalum
Kabɩyɛ: Tantalɩ
ಕನ್ನಡ: ಟಾಂಟಲಮ್
ქართული: ტანტალი
қазақша: Тантал
Kiswahili: Tantali
Kreyòl ayisyen: Tantal
kurdî: Tantal
Кыргызча: Тантал
кырык мары: Тантал (элемент)
Latina: Tantalum
latviešu: Tantals
Lëtzebuergesch: Tantal
lietuvių: Tantalas
Ligure: Tantalio
Limburgs: Tantalum
Livvinkarjala: Tantal
la .lojban.: jinmrtantalu
lumbaart: Tantalio
magyar: Tantál
македонски: Тантал
മലയാളം: ടാന്റലം
मराठी: टांटालम
Bahasa Melayu: Tantalum
Mìng-dĕ̤ng-ngṳ̄: Tantalum
монгол: Тантал
Nederlands: Tantaal
日本語: タンタル
Nordfriisk: Tantaal
norsk: Tantal
norsk nynorsk: Tantal
ଓଡ଼ିଆ: ଟାଣ୍ଟାଲମ
oʻzbekcha/ўзбекча: Tantal (unsur)
ਪੰਜਾਬੀ: ਟੈਂਟਲਮ
پنجابی: ٹینٹالم
Piemontèis: Tantali
română: Tantal
Runa Simi: Tantalyu
संस्कृतम्: टाण्टलम
Scots: Tantalum
Seeltersk: Tantal
shqip: Tantali
sicilianu: Tantaliu
slovenčina: Tantal
slovenščina: Tantal (element)
Soomaaliga: Tantalum
کوردی: تانتالۆم
српски / srpski: Тантал
srpskohrvatski / српскохрватски: Tantalijum
suomi: Tantaali
svenska: Tantal
Tagalog: Tantalo
తెలుగు: టేంటలం
Türkçe: Tantal
اردو: ٹینٹلم
ئۇيغۇرچە / Uyghurche: تانتال
vepsän kel’: Tantal
Tiếng Việt: Tantan
文言:
Winaray: Tantalyo
ייִדיש: טאנטאלום
Yorùbá: Tantalum
粵語:
中文: