Promethium

Promethium, 61Pm
Promethium
Pípè /proʊˈmiːθiəm/ ​(proh-MEE-thee-əm)
Ìhànsójúmetallic
nọ́mbà ìsújọ[145]
Promethium ní orí tábìlì àyè
Hydrogen Helium
Lithium Beryllium Boron Carbon Nitrogen Oxygen Fluorine Neon
Sodium Magnesium Aluminium Silicon Phosphorus Sulfur Chlorine Argon
Potassium Calcium Scandium Titanium Vanadium Chromium Manganese Iron Cobalt Nickel Copper Zinc Gallium Germanium Arsenic Selenium Bromine Krypton
Rubidium Strontium Yttrium Zirconium Niobium Molybdenum Technetium Ruthenium Rhodium Palladium Silver Cadmium Indium Tin Antimony Tellurium Iodine Xenon
Caesium Barium Lanthanum Cerium Praseodymium Neodymium Promethium Samarium Europium Gadolinium Terbium Dysprosium Holmium Erbium Thulium Ytterbium Lutetium Hafnium Tantalum Tungsten Rhenium Osmium Iridium Platinum Gold Mercury (element) Thallium Lead Bismuth Polonium Astatine Radon
Francium Radium Actinium Thorium Protactinium Uranium Neptunium Plutonium Americium Curium Berkelium Californium Einsteinium Fermium Mendelevium Nobelium Lawrencium Rutherfordium Dubnium Seaborgium Bohrium Hassium Meitnerium Darmstadtium Roentgenium Copernicium Nihonium Flerovium Moscovium Livermorium Tennessine Oganesson
-
↑
Pm
↓
Np
neodymium ← promethium → samarium
Nọ́mbà átọ̀mù (Z)61
Ẹgbẹ́group n/a
Àyèàyè 6
Àdìpọ̀Àdìpọ̀-f
Ẹ̀ka ẹ́límẹ́ntì  Lanthanide
Ìtò ẹ̀lẹ́ktrọ́nù[Xe] 4f5 6s2
Iye ẹ̀lẹ́ktrọ́nù lórí ìpele kọ̀ọ̀kan2, 8, 18, 23, 8, 2
Àwọn ohun ìní ara
Ìfarahàn at STPsolid
Ìgbà ìyọ́1315 K ​(1042 °C, ​1908 °F)
Ígbà ìhó3273 K ​(3000 °C, ​5432 °F)
Kíki (near r.t.)7.26 g/cm3
Heat of fusion7.13 kJ/mol
Heat of 289 kJ/mol
Atomic properties
Oxidation states+2, +3 Àdàkọ:Infobox element/symbol-to-oxidation-state/comment
ElectronegativityPauling scale: ? 1.13
Atomic radiusempirical: 183 pm
Covalent radius199 pm
Color lines in a spectral range
Color lines in a spectral range
Spectral lines of promethium
Other properties
Natural occurrenceprimordial
Crystal structure ​hexagonal
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[1]
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
Main isotopes of promethium
Iso­tope Abun­dance Half-life (t1/2) Decay mode Pro­duct
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
Àdàkọ:Category-inline
| references

Promethium (pípè /prɵˈmiːθiəm/, pro-MEE-thee-əm) je apilese kemika to ni ami-idamo Pm ati nomba atomu 61. O yato si awon apilese yioku nitori pe oun nika ni apilese radioalagbara leyin technetium to je titele pelu awon apilese kemika ti awon isotopu won duro sinsin.


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Itokasi

  1. ↑ Magnetic susceptibility of the elements and inorganic compounds, in Handbook of Chemistry and Physics 81st edition, CRC press.
 wò • if. • at. Tábìlì ìdásìkò
1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18
1 H He
2 Li Be B C N O F Ne
3 Na Mg Al Si P S Cl Ar
4 K Ca Sc Ti V Cr Mn Fe Co Ni Cu Zn Ga Ge As Se Br Kr
5 Rb Sr Y Zr Nb Mo Tc Ru Rh Pd Ag Cd In Sn Sb Te I Xe
6 Cs Ba La Ce Pr Nd Pm Sm Eu Gd Tb Dy Ho Er Tm Yb Lu Hf Ta W Re Os Ir Pt Au Hg Tl Pb Bi Po At Rn
7 Fr Ra Ac Th Pa U Np Pu Am Cm Bk Cf Es Fm Md No Lr Rf Db Sg Bh Hs Mt Ds Rg Cn Nh Fl Mc Lv Ts Og
Mẹ́tàlì álkálì Mẹ́tàlì alkalínì ilẹ̀ Lanthanide Áktínídì Transition metal Post-transition metal Mẹ́tálọ́ìdì Àìjẹ́mẹ́tàlì míràn Halojín Ẹ̀fúùfù abíire Unknown chemical properties
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