ବ୍ୟାରିଅମ

ଉଇକିପିଡ଼ିଆ ରୁ

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

Barium
56Ba
Sr

Ba

Ra
caesiumbariumlanthanum
ଭୌତିକ ରୁପ
silvery gray
ସାଧାରଣ ଧର୍ମ
ନାମ, ପ୍ରତୀକ,
ପରମାଣୁ କ୍ରମାଙ୍କ
barium, Ba,
56
ଉଚ୍ଚାରଣ /ˈbɛəriəm/ bair-ee-əm
ମୌଳିକ ପ୍ରକାର alkaline earth metals
ଶ୍ରେଣୀ, ପର୍ଯ୍ୟାୟ, ବ୍ଲକ୍ 2 (alkaline earth metals), 6, s
ମାନକ ପରମାଣବିକ ଓଜନ 137.327
ଇଲେକ୍‌ଟ୍ରୋନ୍ ବିନ୍ୟାସ [Xe] 6s2
2, 8, 18, 18, 8, 2
Electron shells of barium (2, 8, 18, 18, 8, 2)
ଇତିହାସ
ଆବିଷ୍କାର Carl Wilhelm Scheele (1772)
First isolation Humphry Davy (1808)
ଭୌତିକ ଧର୍ମ
ଅବସ୍ଥା solid
(ରୁମ୍ ଟେମ୍ପରେଚର୍‌ରେ ଘନତା) 3.51 g·cm−3
Liquid density at m.p. 3.338 g·cm−3
ଗଳନାଙ୍କ 1000 K, 727 °C, 1341 °F
ସ୍ଫୁଟନାଙ୍କ 2170 K, 1897 °C, 3447 °F
Heat of fusion 7.12 kJ·mol−1
Heat of vaporization 140.3 kJ·mol−1
Molar heat capacity 28.07 J·mol−1·K−1
Vapor pressure
P (Pa) 1 10 100 1 k 10 k 100 k
at T (K) 911 1038 1185 1388 1686 2170
Atomic properties
Oxidation states +2
(strongly basic oxide)
Electronegativity 0.89 (Pauling scale)
Ionization energies 1st: 502.9 kJ·mol−1
2nd: 965.2 kJ·mol−1
3rd: 3600 kJ·mol−1
Atomic radius 222 pm
Covalent radius 215±11 pm
Van der Waals radius 268 pm
Miscellanea
Crystal structure body-centered cubic
Magnetic ordering paramagnetic
Electrical resistivity (20 °C) 332 nΩ·m
Thermal conductivity 18.4 W·m−1·K−1
Thermal expansion (25 °C) 20.6 µm·m−1·K−1
Speed of sound (thin rod) (20 °C) 1620 m·s−1
Young's modulus 13 GPa
Shear modulus 4.9 GPa
Bulk modulus 9.6 GPa
Mohs hardness 1.25
CAS registry number 7440-39-3
Most stable isotopes
iso NA half-life DM DE (MeV) DP
130Ba 0.106% (0.5–2.7)×1021 y εε 2.620 130Xe
132Ba 0.101% >3×1020 y β+β+ 0.846 132Xe
133Ba syn 10.51 y ε 0.517 133Cs
134Ba 2.417% 134Ba is stable with 78 neutrons
135Ba 6.592% 135Ba is stable with 79 neutrons
136Ba 7.854% 136Ba is stable with 80 neutrons
137Ba 11.23% 137Ba is stable with 81 neutrons
138Ba 71.7% 138Ba is stable with 82 neutrons
· r

ବ୍ୟାରିଅମ ହେଉଛି ଏକ ରାସାୟନିକ ମୌଳିକ ଯାହାର ପ୍ରତୀକ Baପରମାଣୁ କ୍ରମାଙ୍କ ୫୬ ଅଟେ ।

ଧର୍ମ[ସମ୍ପାଦନା]

ଉପସ୍ଥିତି[ସମ୍ପାଦନା]

ଗଠନ[ସମ୍ପାଦନା]

ଉତ୍ପାଦନ[ସମ୍ପାଦନା]

ସମସ୍ଥାନିକ[ସମ୍ପାଦନା]

ବ୍ୟବହାର[ସମ୍ପାଦନା]

ଆଧାର[ସମ୍ପାଦନା]

ସହାୟକ ଗ୍ରନ୍ଥ[ସମ୍ପାଦନା]

  • Kresse, Robert; Baudis, Ulrich; Jäger, Paul; Riechers, H. Hermann; Wagner, Heinz; Winkler, Jocher; Wolf, Hans Uwe (2007). "Barium and Barium Compounds". In Ullman, Franz. Ullmann's Encyclopedia of Industrial Chemistry. Wiley-VCH. doi:10.1002/14356007.a03_325.pub2. 
  • Lide, D. R. (2004). CRC Handbook of Chemistry and Physics (84th ed.). Boca Raton (FL): CRC Press. ISBN 978-0-8493-0484-2. 

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