Es - Einsteinium


Atomic number - 99 Density g/mL -
Atomic weight u 252 Melting point K -
Bonding radius A - Boiling point K -
Atomic radius A - Heat of vaporization kJ/mol -
Ionization Potential V 6 .42 Heat of fusion kJ/mol -
Electronegativity - 1 .3 Specific heat J/gK -
The oxide is unknown.
Crystal are unknown.

Electron config. : [Rn] 5f11 7s2


Isotopes of Es: Click mass number for decay process, product for element page.

 
242
7 sec
EC/ECF,5.600
Cf-242/?
242.06967
243
21 sec
a/EC,4.000
Bk-239/Cf-243
243.06967
244
37 sec
a/EC,4.560
Bk-240/Cf-244
244.07088
245
1.1 min
a/EC,3.050
Bk-241/Cf-245
245.07131
246
7.7 min
a/EC,3.880
Bk-242/Cf-246
246.07295
247
4.55 min
a/EC,2.480
Bk-243/Cf-247
247.07364
248
27 min
a/EC,3.060
Bk-244/Cf-248
248.07545
249
102.2 min
a/EC,1.450
Bk-245/Cf-249
249.07640
250
8.6 hr
a/EC,2.100
Bk-246/Cf-250
250.07864
251
33 hr
a/EC,6.176
Bk-247/Cf-251
251.07998
252
471.7 da
a/B-/EC,6.760
Bk-248/Fm-252/Cf-252
252.08297
253
20.47 da
a/SF,6.739
Bk-249/?
253.08481
254
275.7 da
a/B-/EC/SF,6.618
Bk-250/Fm-254/Cf-254/?
254.08801
255
39.8 da
a/B-/SF,5.200
Bk-251/Fm-255/?
255.09026
256
25.4 min
B-,1.670 MeV
Fm-256
256.09355
257
2 sec
SF,4.190 MeV
?
257.09597
MASS abund.
Halflife
Particle, Energy
Decay Product(s)
Isotopic Mass