Cf - Californium

There is no californium in our lab. Discovered by Thompson, Ghiorso, Seaborg and Street in 1950, Berkeley.

Atomic number - 98 Density g/mL -
Atomic weight u 251 Melting point K 900
Bonding radius A - Boiling point K -
Atomic radius A - Heat of vaporization kJ/mol -
Ionization Potential V 6 .3 Heat of fusion kJ/mol -
Electronegativity - 1 .3 Specific heat J/gK -
The oxide is unknown.
Crystal are unknown.

Electron config. : [Rn] 5f10 7s2

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1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18
H He
Li Be B C N O F Ne
Na Mg Al Si P S Cl Ar
K Ca Sc Ti V Cr Mn Fe Co Ni Cu Zn Ga Ge As Se Br Kr
Rb Sr Y Zr Nb Mo Tc Ru Rh Pd Ag Cd In Sn Sb Te I Xe
Cs Ba La* Hf Ta W Re Os Ir Pt Au Hg Tl Pb Bi Po At Rn
Fr Ra Ac** Rf Db Sg Bh Hs Mt 110 111 112 113
Lanthanides* Ce Pr Nd Pm Sm Eu Gd Tb Dy Ho Er Tm Yb Lu
Actinides ** Th Pa U Np Pu Am Cm Bk Cf Es Fm Md No Lr

Isotopes of Cf: Click mass number for decay process, product for element page.
238
1 sec
SF,5.000 MeV
?
238.0 		239
39 sec
a/EC,7.810
Cm-235/Bk-239
239.06256 		240
1.06 min
a,7.719 MeV
Cm-236
240.06229 		241
3.78 min
a/EC,3.300
Cm-237/Bk-241
241.06376 		242
3.49 min
a,7.516 MeV
Cm-238
242.06369 		243
10.7 min
a/EC,2.220
Cm-239/Bk-243
243.06537 		244
19.4 min
a,7.329 MeV
Cm-240
244.06598
245
45.0 min
a/EC,1.569
Cm-241/Bk-245
245.06803 		246
35.7 hr
a/EC/SF,6.862
Cm-242/Bk-246/?
246.06879 		247
3.11 hr
a/EC,5.889
Cm-243/Bk-247
247.07099 		248
333.5 da
a/SF,6.361
Cm-244/?
248.07217 		249
351 yr
a/SF,6.295
Cm-245/?
249.07484 		250
13.08 yr
a/SF,6.128
Cm-246/?
250.07639 		251
898 yr
a,6.176 MeV
Cm-247
251.07957
252
2.645 yr
a/SF,6.217
Cm-248/?
252.08161 		253
17.81 da
a/B-,9.150
Cm-249/Es-253
253.08512 		254
60.5 da
a/SF,4.300
Cm-250/?
254.08731 		255
85 min
B-,5.200 MeV
Es-255
255.09101 		256
12.3 min
a/B-/SF,3.240
Cm-252/Es-256/?
256.0 		MASS abund.
Halflife
Particle, Energy
Decay Product(s)
Isotopic Mass

Updated by clh on 2/6/98. This is not a publication of Phoenix College.