ମୁଖ୍ୟ ସୂଚୀ ଦେଖିବେ

ପ୍ରୋମେଥିଅମ ହେଉଛି ଏକ ରାସାୟନିକ ମୌଳିକ ଯାହାର ପ୍ରତୀକ Pmପରମାଣୁ କ୍ରମାଙ୍କ ୬୧ ଅଟେ ।

Promethium,  61Pm
ସାଧାରଣ ଗୁଣ
ନାମ, ପ୍ରତୀକpromethium, Pm
Appearancemetallic
ଉଚ୍ଚାରଣ /prɵˈmθiəm/
pro-MEE-thee-əm
Promethium 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)
-

Pm

Np
neodymiumpromethiumsamarium
ପରମାଣୁ କ୍ରମାଙ୍କ (Z)61
ଶ୍ରେଣୀ, ବ୍ଳକgroup n/a, f-block
ପର୍ଯ୍ୟାୟperiod 6
ମୌଳିକ ପ୍ରକାର  lanthanide
ମାନକ ପରମାଣବିକ ଓଜନ (Ar)[145]
ଇଲେକ୍‌ଟ୍ରୋନ୍ ବିନ୍ୟାସ[Xe] 6s2 4f5
per shell
2, 8, 18, 23, 8, 2
ଭୌତିକ ଗୁଣ
ଅବସ୍ଥାsolid
ଗଳନାଙ୍କ1315 K ​(1042 °C, ​1908 °F)
ସ୍ଫୁଟନାଙ୍କ3273 K ​(3000 °C, ​5432 °F)
Density near r.t.7.26 g/cm3
Heat of fusion7.13 kJ/mol
Heat of 289 kJ/mol
Atomic properties
Oxidation states3 (mildly basic oxide)
ElectronegativityPauling scale: ? 1.13
Atomic radiusempirical: 183 pm
Covalent radius199 pm
Miscellanea
Crystal structurehexagonal
Hexagonal crystal structure for promethium
Thermal expansion(r.t.) (α, poly)
est. 11 µm/(m·K)
Thermal conductivity17.9 W/(m·K)
Electrical resistivity(r.t.) est. 0.75 µ Ω·m
Magnetic orderingparamagnetic[୧]
Young's modulus(α form) est. 46 GPa
Shear modulus(α form) est. 18 GPa
Bulk modulus(α form) est. 33 GPa
Poisson ratio(α form) est. 0.28
CAS Number7440-12-2
ଇତିହାସ
ଆବିଷ୍କାରChien Shiung Wu, Emilio Segrè, Hans Bethe (1942)
First isolationCharles D. Coryell, Jacob A. Marinsky, Lawrence E. Glendenin, Harold G. Richter (1945)
Named byGrace Mary Coryell (1945)
Most stable isotopes of promethium
iso NA half-life DM DE (MeV) DP
145Pm syn 17.7 y ε 0.163 145Nd
146Pm syn 5.53 y ε 1.472 146Nd
β 1.542 146Sm
147Pm trace 2.6234 y β 0.224 147Sm
| references

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ଆଧାରସମ୍ପାଦନ କରନ୍ତୁ

  1. Magnetic susceptibility of the elements and inorganic compounds, in Handbook of Chemistry and Physics 81st edition, CRC press.

ଆହୁରି ପଢନ୍ତୁସମ୍ପାଦନ କରନ୍ତୁ

  • Emsley, John (2011). Nature's Building Blocks: An A-Z Guide to the Elements. Oxford University Press. pp. 428–430. ISBN 978-0-19-960563-7.
  • Lavrukhina, A. K.; Pozdnyakov, A. A. (1966). Аналитическая химия технеция, прометия, астатина и франция (Analytical Chemistry of Technetium, Promethium, Astatine, and Francium) (in Russian). Nauka.CS1 maint: Unrecognized language (link)

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