Po - Polonium

Polonium was discovered by Marie Curie in 1898 in Paris.

Atomic number - 84 Density g/mL 9 .4
Atomic weight u 209 Melting point K 527
Bonding radius A 1 .46 Boiling point K 1235
Atomic radius A 1 .53 Heat of vaporization kJ/mol -
Ionization Potential V 8 .42 Heat of fusion kJ/mol -
Electronegativity - 2 Specific heat J/gK -
The oxide is amphoteric.
Crystal are monoclinic.

Electron config. : [Xe] 4f14 5d10 6s2 6p4


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


190
9.6 msec
a,7.643 MeV
Pb-186
189.99506
191
15.5 msec
a,7.471 MeV
Pb-187
190.99452
192
0.034 sec
a/EC,7.320
Pb-188/Bi-192
191.99151
193
360 msec
a,7.100 MeV
Pb-189
192.99108
194
0.392 sec
a,6.987 MeV
Pb-190
193.98828
195
4.64 sec
a/EC,6.750
Pb-191/Bi-195
194.98804
196
5.8 sec
a/EC,6.657
Pb-192/Bi-196
195.98551
197
53.6 sec
a/EC,6.200
Pb-193/Bi-197
196.98557
198
1.76 min
a/EC,6.309
Pb-194/Bi-198
197.98333
199
5.48 min
a/EC,5.600
Pb-195/Bi-199
198.98357
200
11.5 min
a/EC,3.350
Pb-196/Bi-200
199.98173
201
15.3 min
a/EC,4.880
Pb-197/Bi-201
200.98221
202
44.7 min
a/EC,2.820
Pb-198/Bi-202
201.98069
203
36.7 min
a/EC,4.230
Pb-199/Bi-203
202.98141
204
3.53 hr
a/EC,2.340
Pb-200/Bi-204
203.98030
205
1.66 hr
a/EC,3.530
Pb-201/Bi-205
204.98117
206
8.8 da
a/EC,1.846
Pb-202/Bi-206
205.98046
207
5.80 hr
a/EC,2.909
Pb-203/Bi-207
206.98157
208
2.898 yr
a/EC,5.215
Pb-204/Bi-208
207.98123
209
102 yr
a/EC,4.979
Pb-205/Bi-209
208.98241
210
138.376 da
a,5.407 MeV
Pb-206
209.98285
211
0.516 sec
a,7.595 MeV
Pb-207
210.98663
212
0.299 usec
a,8.954 MeV
Pb-208
211.98885
212a
45.1 sec
a,11.876 MeV
Pb-208
211.99198
213
4.2 usec
a,8.537 MeV
Pb-209
212.99284
214
164.3 usec
a,7.833 MeV
Pb-210
213.99518
215
1.781 msec
a/B-,7.526
Pb-211/At-215
214.99941
216
0.145 sec
a,6.906 MeV
Pb-212
216.00190
217
10 sec
a/B-,6.660
Pb-213/At-217
217.00634
218
3.10 min
a/B-,6.115
Pb-214/At-218
218.00896
MASS abund.
Halflife
Particle, Energy
Decay Product(s)
Isotopic Mass