Pu - Plutonium

Plutonium was discovered, secretly, in 1940 by Glenn Seaborg with Wahl and Kennedy at Berkeley and publicly reported in 1946. Plutonium was extracted from uranium ore in 1947. Until recently the major use of plutonium has been for nuclear weaponry, it now finds its best use in deep space probe electricity sources .

Atomic number - 94 Density g/mL 19 .8
Atomic weight u 244 Melting point K 913
Bonding radius A - Boiling point K 3503
Atomic radius A - Heat of vaporization kJ/mol 344
Ionization Potential V 6 .06 Heat of fusion kJ/mol 2 .84
Electronegativity - 1 .28 Specific heat J/gK 0 .13
The oxide is amphoteric.
Crystal are monoclinic.

Electron config. : [Rn] 5f6 7s2

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


228

a/SF,4.480
U-224/?
228.0 		229

a,2.560 MeV
U-225
229.0 		230
200 sec
a,7.175 MeV
U-226
230.03963 		232
34.1 min
a/EC,1.060
U-228/Np-232
232.04117 		233
20.9 min
a/EC,1.900
U-229/Np-233
233.04299 		234
8.8 hr
a/EC,1.810
U-230/Np-234
234.04330 		235
25.3 min
a/EC,1.170
U-231/Np-235
235.04530
236
2.858 yr
a/SF,5.867
U-232/?
236.04604 		237
45.2 da
a/EC,4.959
U-233/Np-237
237.04840 		237a
1.1 usec
SF,5.750 MeV
?
237.05151 		238
87.7 yr
a/SF,5.593
U-234/?
238.04955 		238a
6.0 nsec
SF,5.593 MeV
?
238.05331 		239
24110 yr
a/SF,5.245
U-235/?
239.05215 		240
6564 yr
a/SF,5.256
U-236/?
240.05380
240a
3.7 nsec
SF,5.256 MeV
?
240.05681 		241
14.35 yr
a/B-/SF,1.310
U-237/Am-241/?
241.05684 		241a
32 nsec
SF,5.140 MeV
?
241.05920 		242
3.733E+5 yr
a/SF,4.984
U-238/?
242.05873 		243
4.956 hr
B-,2.170 MeV
Am-243
243.06199 		244
8.08E+7 yr
a/SF,4.666
U-240/?
244.06419 		245
10.5 hr
B-,1.205 MeV
Am-245
245.06773
246
10.84 da
B-,8.440 MeV
Am-246
246.07019 		247
2.27 da
B-,2.160 MeV
Am-247
247.07450 		MASS abund.
Halflife
Particle, Energy
Decay Product(s)
Isotopic Mass