మూస:ఫెర్మియం మూలకము

ఫెర్మియం, ₀₀Fm

ఫెర్మియం
Pronunciation	/ˈfɜːrmiəm/ ​(FUR-mee-əm)
Appearance	unknown
Mass number	[257]
ఫెర్మియం in the periodic table
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 Ununtrium Flerovium Ununpentium Livermorium Ununseptium Ununoctium Er ↑ Fm ↓ (Upb) ఐంస్టైనియం ← ఫెర్మియం → మెండెలెవియం
Group	మూస:Infobox element/symbol-to-group/format
Period	period 7
Block	f-block
Electron configuration	[Rn] 5f12 7s2
Electrons per shell	2, 8, 18, 32, 30, 8, 2
Physical properties
Phase at STP	solid (predicted)
Melting point	1125 K ​(852 °C, ​1565 (predicted) °F)
Atomic properties
Oxidation states	+2, +3
Electronegativity	Pauling scale: 1.3
Other properties
Natural occurrence	synthetic
CAS Number	7440-72-4
History
Discovery	Lawrence Berkeley National Laboratory (1952)
Isotopes of ఫెర్మియం

References

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