Kalifọ́rníọ̀m

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Californium, 98Cf
Californium
Pípè /ˌkælˈfɔːrniəm/ (KAL-ə-FOR-nee-əm)
Ìhànsójúsilvery
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)
berkeliumcaliforniumeinsteinium
Nọ́mbà átọ̀mù (Z)98
Ẹgbẹ́group n/a
Àyèàyè 7
Àdìpọ̀Àdìpọ̀-f
Ẹ̀ka ẹ́límẹ́ntì  Actinide
Ìtò ẹ̀lẹ́ktrọ́nù[Rn] 5f10 7s2[1]
Iye ẹ̀lẹ́ktrọ́nù lórí ìpele kọ̀ọ̀kan2, 8, 18, 32, 28, 8, 2
Àwọn ohun ìní ara
Ìfarahàn at STPsolid
Ìgbà ìyọ́1173 K ​(900 °C, ​1652 °F)
Ígbà ìhó1743 K ​(1470 °C, ​2678 °F)
Kíki (near r.t.)15.1 g/cm3
Atomic properties
Oxidation states+2, +3, +4, +5[2][3]
ElectronegativityPauling scale: 1.3
Color lines in a spectral range
Spectral lines of californium
Other properties
Natural occurrencesynthetic
CAS Number7440-71-3
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
Àdàkọ:Category-inline
| references

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.


Itokasi[àtúnṣe | àtúnṣe àmìọ̀rọ̀]

  1. CRC 2006, p. 1.14.
  2. Greenwood & Earnshaw 1997, p. 1265.
  3. Kovács, Attila; Dau, Phuong D.; Marçalo, Joaquim; Gibson, John K. (2018). "Pentavalent Curium, Berkelium, and Californium in Nitrate Complexes: Extending Actinide Chemistry and Oxidation States". Inorg. Chem. (American Chemical Society) 57 (15): 9453–9467. doi:10.1021/acs.inorgchem.8b01450. PMID 30040397.