Kalifọ́rníọ̀m

Kalifọ́rníọ̀m

Californium, ₉₈Cf

Californium
Pípè	/ˌkælᵻˈfɔːrniəm/ ​(KAL-ə-FOR-nee-əm)
Ìhànsójú	silvery
nọ́mbà ìsújọ	[251]
Californium 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 Dy ↑ Cf ↓ (Uqo) berkelium ← californium → einsteinium
Nọ́mbà átọ̀mù (Z)	98
Ẹgbẹ́	group n/a
Àyè	àyè 7
Àdìpọ̀	Àdìpọ̀-f
Ẹ̀ka ẹ́límẹ́ntì	Actinide
Ìtò ẹ̀lẹ́ktrọ́nù	[Rn] 5f10 7s2
Iye ẹ̀lẹ́ktrọ́nù lórí ìpele kọ̀ọ̀kan	2, 8, 18, 32, 28, 8, 2
Àwọn ohun ìní ara
Ìfarahàn at STP	solid
Ìgbà ìyọ́	1173 K ​(900 °C, ​1652 °F)
Ígbà ìhó	1743 K ​(1470 °C, ​2678 °F)
Kíki (near r.t.)	15.1 g/cm3
Atomic properties
Oxidation states	+2, +3, +4, +5
Electronegativity	Pauling scale: 1.3
Color lines in a spectral range Spectral lines of californium
Other properties
Natural occurrence	synthetic
CAS Number	7440-71-3
Main isotopes of californium
Iso­tope Abun­dance Half-life (t1/2) Decay mode Pro­duct 248Cf syn 333.5 d SF - - α 6.361 244Cm 249Cf syn 351 y SF - - α 6.295 245Cm 250Cf syn 13.08 y α 6.128 246Cm SF - - 251Cf syn 898 y α 6.176 247Cm 252Cf syn 2.645 y α 6.217 248Cm SF - - 253Cf syn 17.81 d β− 0.285 253Es α 6.124 249Cm 254Cf syn 60.5 d SF - - α 5.926 250Cm

Kalifọ́rníọ̀m tabi Californium je apilese kemika onide alagbaradio to ni ami-idamo Cf ati nomba atomu 98. Apilese yi koko je mimuwaye ni 1950 nipa didigbolu curium pelu awon igbonwo alpha (awon ioni helium) ni Yunifasiti Kalifornia ni Berkeley. Ohun ni apilese teyinuraniom kefa to je sisopapo. Californium ni ikan ninu awon apilese isulopo atomu gigajulo to je mimuwaye ni iye to se e won. O je sisoloruko fun ipinle ati yunifasiti Kalifornia.