Prometyo

(Naredirek gikan sa Promethium)

Ang prometyo (Iningles promethium) mao ang elementong kimiko sa talaang peryodiko nga may simbolo nga Pm ug kaiphan nga atomik 61. Ang prometyo mao ang puthaw nga lantanido.

Promethium
61Pm
-

Pm

Np
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)
neodymiumpromethiumsamarium
Panagway
metallic
Kinatibuk-ang mga kinaiya
Ngalan, simbolo, kaiphan promethium, Pm, 61
Paglitok /prˈmθiəm/
[[Help:Pronunciation respelling key|pro-Plantilya:Smallcaps all-thee-əm]]
Kategoriyang elemento puthaw nga lantanido
Group, period, block [[group {{{group}}} element|{{{group}}}]], 6, f
Gibug-aton sa atomo [145]
Kontorno sa elektron [Xe] 6s2 4f5
2, 8, 18, 23, 8, 2
Electron shells of promethium (2, 8, 18, 23, 8, 2)
Electron shells of promethium (2, 8, 18, 23, 8, 2)
History
Pagkadiskobre Chien Shiung Wu, Emilio Segrè, Hans Bethe (1942)
First isolation Charles D. Coryell, Jacob A. Marinsky, Lawrence E. Glendenin, Harold G. Richter (1945)
Named by Grace Mary Coryell (1945)
Physical properties
Phase magahi
Density (near r.t.) 7.26 g·cm−3
Melting point 1315 K, 1042 °C, 1908 °F
Boiling point 3273 K, 3000 °C, 5432 °F
Heat of fusion 7.13 kJ·mol−1
Heat of vaporization 289 kJ·mol−1
Atomic properties
Oxidation states 3 (mildly basic oxide)
Electronegativity ? 1.13 (Pauling scale)
Ionization energies 1st: 540 kJ·mol−1
2nd: 1050 kJ·mol−1
3rd: 2150 kJ·mol−1
Atomic radius 183 pm
Covalent radius 199 pm
Miscellanea
Crystal structure hexagonal
Promethium has a hexagonal crystal structure
Magnetic ordering paramagnetic[1]
Electrical resistivity (r.t.) est. 0.75 µΩ·m
Thermal conductivity 17.9 W·m−1·K−1
Thermal expansion (r.t.) (α, poly)
est. 11 µm/(m·K)
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 registry number 7440-12-2
Most stable isotopes
Main article: 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
· r

Ang mga gi basihan niini

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


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