ମୁଖ୍ୟ ସୂଚୀ ଦେଖିବେ

କାଲିଫର୍ମିଅମ ହେଉଛି ଏକ ତେଜସ୍କ୍ରିୟ ରାସାୟନିକ ମୌଳିକ ଯାହାର ପ୍ରତୀକ Cfପରମାଣୁ କ୍ରମାଙ୍କ ୯୮ ଅଟେ ।

Californium,  98Cf
A very small disc of silvery metal, magnified to show its metallic texture
ସାଧାରଣ ଗୁଣ
ନାମ, ପ୍ରତୀକcalifornium, Cf
Appearancesilvery
ଉଚ୍ଚାରଣ /ˌkælɪˈfɔrniəm/
KAL-i-FOR-nee-əm
Californium in the periodic table
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)
Dy

Cf

(Upn)
berkeliumcaliforniumeinsteinium
ପରମାଣୁ କ୍ରମାଙ୍କ (Z)98
ଶ୍ରେଣୀ, ବ୍ଳକgroup n/a, f-block
ପର୍ଯ୍ୟାୟperiod 7
ମୌଳିକ ପ୍ରକାର  actinide
ମାନକ ପରମାଣବିକ ଓଜନ (Ar)(251) [୧]
ଇଲେକ୍‌ଟ୍ରୋନ୍ ବିନ୍ୟାସ[Rn] 5f10 7s2 [୨]
per shell
2, 8, 18, 32, 28, 8, 2
ଭୌତିକ ଗୁଣ
ଅବସ୍ଥାsolid
ଗଳନାଙ୍କ1173 K ​(900 [୧] °C, ​1652 °F)
ସ୍ଫୁଟନାଙ୍କ1743[୩] K ​(1470 °C, ​2678 (estimation) °F)
Density near r.t.15.1[୧] g/cm3
Atomic properties
Oxidation states2, 3, 4 [୪]
ElectronegativityPauling scale: 1.3 [୫]
Miscellanea
Crystal structuresimple hexagonal
Simple hexagonal crystal structure for californium
Mohs hardness3–4[୬]
CAS Number7440-71-3 [୧]
ଇତିହାସ
ଆବିଷ୍କାରLawrence Berkeley National Laboratory (1950)
Most stable isotopes of californium
iso NA half-life DM DE (MeV) DP
248Cf syn 333.5 d α (100%) 6.369 244Cm
SF (2.9×10−3%) 0.0029
249Cf trace 351 y α (100%) 6.295 245Cm
SF (5.0×10−7%) 4.4×10−7
250Cf trace 13.08 y α (99.92%) 6.129 246Cm
SF (0.08%) 0.077
251Cf trace 898 y α 6.172 247Cm
252Cf trace 2.645 y α (96.91%) 6.217 248Cm
SF (3.09%)
253Cf trace 17.81 d β (99.69%) 0.29 253Es
α (0.31%) 6.126 249Cm
254Cf syn 60.5 d SF (99.69%)
α (0.31%) 5.930 250Cm
Isotope references: [୭][୮]
| references

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ଆଧାରସମ୍ପାଦନ କରନ୍ତୁ

  1. ୧.୦ ୧.୧ ୧.୨ ୧.୩ CRC 2006, p. 4.56.
  2. CRC 2006, p. 1.14.
  3. Joseph Jacob Katz; Glenn Theodore Seaborg; Lester R. Morss (1986). The Chemistry of the actinide elements. Chapman and Hall. p. 1038. ISBN 9780412273704. Retrieved 11 July 2011.
  4. Greenwood 1997, p. 1265.
  5. Emsley 1998, p. 50.
  6. CRC 1991, p. 254.
  7. CRC 2006, p. 11.196.
  8. NNDC contributors (2008). Sonzogni, Alejandro A. (Database Manager) (ed.). "Chart of Nuclides". National Nuclear Data Center, Brookhaven National Laboratory. Retrieved 2010-03-01.

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