ଟାଣ୍ଟାଲମ

ଉଇକିପିଡ଼ିଆ ରୁ

| colspan=2 style="text-align: center" | Main article: Isotopes of tantalum

Tantalum
73Ta
Nb

Ta

Db
hafniumtantalumtungsten
ଭୌତିକ ରୁପ
gray blue
ସାଧାରଣ ଧର୍ମ
ନାମ, ପ୍ରତୀକ,
ପରମାଣୁ କ୍ରମାଙ୍କ
tantalum, Ta,
73
ଉଚ୍ଚାରଣ /ˈtæntələm/
tan-təl-əm;
previously /tænˈtæliəm/
tan-tal-ee-əm
ମୌଳିକ ପ୍ରକାର transition metal
ଶ୍ରେଣୀ, ପର୍ଯ୍ୟାୟ, ବ୍ଲକ୍ 5, 6, d
ମାନକ ପରମାଣବିକ ଓଜନ 180.94788
ଇଲେକ୍‌ଟ୍ରୋନ୍ ବିନ୍ୟାସ [Xe] 4f14 5d3 6s2
2, 8, 18, 32, 11, 2
Electron shells of tantalum (2, 8, 18, 32, 11, 2)
ଇତିହାସ
ଆବିଷ୍କାର Anders Gustaf Ekeberg (1802)
Recognized as a distinct element by Heinrich Rose (1844)
ଭୌତିକ ଧର୍ମ
ଅବସ୍ଥା solid
(ରୁମ୍ ଟେମ୍ପରେଚର୍‌ରେ ଘନତା) 16.69 g·cm−3
Liquid density at m.p. 15 g·cm−3
ଗଳନାଙ୍କ 3290 K, 3017 °C, 5463 °F
ସ୍ଫୁଟନାଙ୍କ 5731 K, 5458 °C, 9856 °F
Heat of fusion 36.57 kJ·mol−1
Heat of vaporization 732.8 kJ·mol−1
Molar heat capacity 25.36 J·mol−1·K−1
Vapor pressure
P (Pa) 1 10 100 1 k 10 k 100 k
at T (K) 3297 3597 3957 4395 4939 5634
Atomic properties
Oxidation states 5, 4, 3, 2, -1 (mildly acidic oxide)
Electronegativity 1.5 (Pauling scale)
Ionization energies 1st: 761 kJ·mol−1
2nd: 1500 kJ·mol−1
Atomic radius 146 pm
Covalent radius 170±8 pm
Miscellanea
Crystal structure body-centered cubic[୧]

α-Ta
tetragonal[୧]

β-Ta
Magnetic ordering paramagnetic[୨]
Electrical resistivity (20 °C) 131 nΩ·m
Thermal conductivity 57.5 W·m−1·K−1
Thermal expansion (25 °C) 6.3 µm·m−1·K−1
Speed of sound (thin rod) (20 °C) 3400 m·s−1
Young's modulus 186 GPa
Shear modulus 69 GPa
Bulk modulus 200 GPa
Poisson ratio 0.34
Mohs hardness 6.5
Vickers hardness 873 MPa
Brinell hardness 800 MPa
CAS registry number 7440-25-7
Most stable isotopes
iso NA half-life DM DE (MeV) DP
177Ta syn 56.56 h ε 1.166 177Hf
178Ta syn 2.36 h ε 1.910 178Hf
179Ta syn 1.82 y ε 0.110 179Hf
180Ta syn 8.125 h ε 0.854 180Hf
β 0.708 180W

ଛାଞ୍ଚ:Elementbox isotopes decay4

181Ta 99.988% 181Ta is stable with 108 neutrons
182Ta syn 114.43 d β 1.814 182W
183Ta syn 5.1 d β 1.070 183W
· r

ଟାଣ୍ଟାଲମ ହେଉଛି ଏକ ରାସାୟନିକ ମୌଳିକ ଯାହାର ପ୍ରତୀକ Taପରମାଣୁ କ୍ରମାଙ୍କ ୭୩ ଅଟେ ।

ଧର୍ମ[ସମ୍ପାଦନା]

ଭୌତିକ[ସମ୍ପାଦନା]

ରସାୟନିକ[ସମ୍ପାଦନା]

ସମସ୍ଥାନିକ[ସମ୍ପାଦନା]

ଉପସ୍ଥିତି[ସମ୍ପାଦନା]

ଗଠନ[ସମ୍ପାଦନା]

ଉତ୍ପାଦନ[ସମ୍ପାଦନା]

ବ୍ୟବହାର[ସମ୍ପାଦନା]

ଆହୁରି ଦେଖନ୍ତୁ[ସମ୍ପାଦନା]

ଆଧାର[ସମ୍ପାଦନା]

  1. ୧.୦ ୧.୧ doi:10.1107/S0567740873004140
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  2. Magnetic susceptibility of the elements and inorganic compounds, in Handbook of Chemistry and Physics 81st edition, CRC press.

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