ଛାଞ୍ଚ:Infobox Californium

Californium,  ₉₈Cf

ସାଧାରଣ ଗୁଣ
ନାମ, ପ୍ରତୀକ	californium, Cf
Appearance	silvery
ଉଚ୍ଚାରଣ	/ˌkælˈfɔːrniəm/ KAL-i-FOR-nee-əm
Californium in the periodic table
Dy ↑ Cf ↓ (Upn) berkelium ← californium → einsteinium
ପରମାଣୁ କ୍ରମାଙ୍କ (Z)	98
ଶ୍ରେଣୀ, ବ୍ଳକ	group n/a, f-block
ପର୍ଯ୍ୟାୟ	period 7
ମୌଳିକ ପ୍ରକାର	actinide
ମାନକ ପରମାଣବିକ ଓଜନ (Ar)	(251)
ଇଲେକ୍‌ଟ୍ରୋନ୍ ବିନ୍ୟାସ	[Rn] 5f10 7s2
per shell	2, 8, 18, 32, 28, 8, 2
ଭୌତିକ ଗୁଣ
ଅବସ୍ଥା	solid
ଗଳନାଙ୍କ	1173 K ​(900  °C, ​1652 °F)
ସ୍ଫୁଟନାଙ୍କ	1743 K ​(1470 °C, ​2678 (estimation) °F)
Density near r.t.	15.1 g/cm3
Atomic properties
Oxidation states	2, 3, 4
Electronegativity	Pauling scale: 1.3
Miscellanea
Crystal structure	​simple hexagonal
Mohs hardness	3–4
CAS Number	7440-71-3
ଇତିହାସ
ଆବିଷ୍କାର	Lawrence 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:

References

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