ଲାନ୍ଥାନମ

ଉଇକିପିଡ଼ିଆ ରୁ
(Lanthanum ରୁ ଲେଉଟି ଆସିଛି)
ସିଧାସଳଖ ଯିବେ ଦିଗବାରେଣିକୁ, ଖୋଜିବେ
Lanthanum,  57La
Lanthanum-2.jpg
ସାଧାରଣ ଗୁଣ
ନାମ, ପ୍ରତୀକ lanthanum, La
Appearance silvery white
ଉଚ୍ଚାରଣ /ˈlænθənəm/
Lanthanum in the periodic table
Hydrogen (other non-metal)
Helium (noble gas)
Lithium (alkali metal)
Beryllium (alkaline earth metal)
Boron (metalloid)
Carbon (other non-metal)
Nitrogen (other non-metal)
Oxygen (other non-metal)
Fluorine (halogen)
Neon (noble gas)
Sodium (alkali metal)
Magnesium (alkaline earth metal)
Aluminium (post-transition metal)
Silicon (metalloid)
Phosphorus (other non-metal)
Sulfur (other non-metal)
Chlorine (halogen)
Argon (noble gas)
Potassium (alkali metal)
Calcium (alkaline earth metal)
Scandium (transition metal)
Titanium (transition metal)
Vanadium (transition metal)
Chromium (transition metal)
Manganese (transition metal)
Iron (transition metal)
Cobalt (transition metal)
Nickel (transition metal)
Copper (transition metal)
Zinc (transition metal)
Gallium (post-transition metal)
Germanium (metalloid)
Arsenic (metalloid)
Selenium (other non-metal)
Bromine (halogen)
Krypton (noble gas)
Rubidium (alkali metal)
Strontium (alkaline earth metal)
Yttrium (transition metal)
Zirconium (transition metal)
Niobium (transition metal)
Molybdenum (transition metal)
Technetium (transition metal)
Ruthenium (transition metal)
Rhodium (transition metal)
Palladium (transition metal)
Silver (transition metal)
Cadmium (transition metal)
Indium (post-transition metal)
Tin (post-transition metal)
Antimony (metalloid)
Tellurium (metalloid)
Iodine (halogen)
Xenon (noble gas)
Caesium (alkali metal)
Barium (alkaline earth metal)
Lanthanum (lanthanoid)
Cerium (lanthanoid)
Praseodymium (lanthanoid)
Neodymium (lanthanoid)
Promethium (lanthanoid)
Samarium (lanthanoid)
Europium (lanthanoid)
Gadolinium (lanthanoid)
Terbium (lanthanoid)
Dysprosium (lanthanoid)
Holmium (lanthanoid)
Erbium (lanthanoid)
Thulium (lanthanoid)
Ytterbium (lanthanoid)
Lutetium (lanthanoid)
Hafnium (transition metal)
Tantalum (transition metal)
Tungsten (transition metal)
Rhenium (transition metal)
Osmium (transition metal)
Iridium (transition metal)
Platinum (transition metal)
Gold (transition metal)
Mercury (transition metal)
Thallium (post-transition metal)
Lead (post-transition metal)
Bismuth (post-transition metal)
Polonium (post-transition metal)
Astatine (halogen)
Radon (noble gas)
Francium (alkali metal)
Radium (alkaline earth metal)
Actinium (actinoid)
Thorium (actinoid)
Protactinium (actinoid)
Uranium (actinoid)
Neptunium (actinoid)
Plutonium (actinoid)
Americium (actinoid)
Curium (actinoid)
Berkelium (actinoid)
Californium (actinoid)
Einsteinium (actinoid)
Fermium (actinoid)
Mendelevium (actinoid)
Nobelium (actinoid)
Lawrencium (actinoid)
Rutherfordium (transition metal)
Dubnium (transition metal)
Seaborgium (transition metal)
Bohrium (transition metal)
Hassium (transition metal)
Meitnerium (unknown chemical properties)
Darmstadtium (unknown chemical properties)
Roentgenium (unknown chemical properties)
Copernicium (transition metal)
Ununtrium (unknown chemical properties)
Flerovium (unknown chemical properties)
Ununpentium (unknown chemical properties)
Livermorium (unknown chemical properties)
Ununseptium (unknown chemical properties)
Ununoctium (unknown chemical properties)
-

La

Ac
bariumlanthanumcerium
ପରମାଣୁ କ୍ରମାଙ୍କ (Z) 57
ଶ୍ରେଣୀ, ବ୍ଳକ group n/a, f-block
ପର୍ଯ୍ୟାୟ period 6
ମୌଳିକ ପ୍ରକାର   lanthanide, sometimes considered a transition metal
ମାନକ ପରମାଣବିକ ଓଜନ (Ar) 138.90547
ଇଲେକ୍‌ଟ୍ରୋନ୍ ବିନ୍ୟାସ [Xe] 5d1 6s2
per shell
2, 8, 18, 18, 9, 2
ଭୌତିକ ଗୁଣ
ଅବସ୍ଥା solid
ଗଳନାଙ୍କ 1193 K ​(920 °C, ​1688 °F)
ସ୍ଫୁଟନାଙ୍କ 3737 K ​(3464 °C, ​6267 °F)
Density near r.t. 6.162 g/cm3
when liquid, at m.p. 5.94 g/cm3
Heat of fusion 6.20 kJ/mol
Heat of 402.1 kJ/mol
Molar heat capacity 27.11 J/(mol·K)
 pressure (extrapolated)
P (Pa) 1 10 100 1 k 10 k 100 k
at T (K) 2005 2208 2458 2772 3178 3726
Atomic properties
Oxidation states 3, 2 (strongly basic oxide)
Electronegativity Pauling scale: 1.10
Atomic radius empirical: 187 pm
Covalent radius 207±8 pm
Miscellanea
Crystal structure hexagonal
Hexagonal crystal structure for lanthanum
Speed of sound thin rod 2475 m/s (at 20 °C)
Thermal expansion (r.t.) (α, poly) 12.1 µm/(m·K)
Thermal conductivity 13.4 W/(m·K)
Electrical resistivity (r.t.) (α, poly) 615 n Ω·m
Magnetic ordering paramagnetic[୧]
Young's modulus (α form) 36.6 GPa
Shear modulus (α form) 14.3 GPa
Bulk modulus (α form) 27.9 GPa
Poisson ratio (α form) 0.280
Mohs hardness 2.5
Vickers hardness 491 MPa
Brinell hardness 363 MPa
CAS Number 7439-91-0
ଇତିହାସ
ଆବିଷ୍କାର Carl Gustaf Mosander (1838)
Most stable isotopes of lanthanum
iso NA half-life DM DE (MeV) DP
137La syn 6×104 y ε 0.600 137Ba
138La 0.090% 1.05×1011 y ε 1.737 138Ba
β 1.044 138Ce
139La 99.910% 139La is stable with 82 neutrons
| references

ଲାନ୍ଥାନମ ହେଉଛି ଏକ ରାସାୟନିକ ମୌଳିକ ଯାହାର ପ୍ରତୀକ Laପରମାଣୁ କ୍ରମାଙ୍କ ୫୭ ଅଟେ ।

ଧର୍ମ[ସମ୍ପାଦନା]

ଉପସ୍ଥିତି[ସମ୍ପାଦନା]

ଗଠନ[ସମ୍ପାଦନା]

ଉତ୍ପାଦନ[ସମ୍ପାଦନା]

ସମସ୍ଥାନିକ[ସମ୍ପାଦନା]

ବ୍ୟବହାର[ସମ୍ପାଦନା]

ଆଧାର[ସମ୍ପାଦନା]

ଆହୁରି ପଢନ୍ତୁ[ସମ୍ପାଦନା]

  • The Industrial Chemistry of the Lanthanons, Yttrium, Thorium and Uranium, by R.J. Callow, Pergamon Press 1967
  • Extractive Metallurgy of Rare Earths, by C.K. Gupta and N. Krishnamurthy, CRC Press 2005
  • Nouveau Traite de Chimie Minerale, Vol. VII. Scandium, Yttrium, Elements des Terres Rares, Actinium, P. Pascal, Editor, Masson & Cie 1959
  • Chemistry of the Lanthanons, by R.C. Vickery, Butterworths 1953

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