Pt - Platinum

This precious transition metal has been used since antiquity in South America. Spanish soldiers introduced the metal to Europe in 1750. 

Atomic number - 78 Density g/mL 21 .4
Atomic weight u 195 .09 Melting point K 2045
Bonding radius A 1 .3 Boiling point K 4100
Atomic radius A 1 .83 Heat of vaporization kJ/mol 510
Ionization Potential V 9 Heat of fusion kJ/mol 19 .6
Electronegativity - 2 .28 Specific heat J/gK 0 .13
The oxide is mildly basic.
Crystal are face centered cubic.

Electron config. : [Xe] 4f14 5d9 6s1


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


168

a,6.991 MeV
Os-164
167.98808
169
2.5 msec
a,6.840 MeV
Os-165
168.98647
170
6 msec
a,6.704 MeV
Os-166
169.98232
171
25 msec
a/EC,6.610
Os-167/Ir-171
170.98110
172
0.104 sec
a/EC,6.465
Os-168/Ir-172
171.97729
173
342 msec
a/EC,6.350
Os-169/Ir-173
172.97650
174
0.90 sec
a/EC,6.184
Os-170/Ir-174
173.97281
175
2.52 sec
a/EC,6.179
Os-171/Ir-175
174.97230
176
6.33 sec
a/EC,5.100
Os-172/Ir-176
175.96899
177
11 sec
a/EC,6.800
Os-173/Ir-177
176.96843
178
21.1 sec
a/EC,4.300
Os-174/Ir-178
177.96575
179
21.2 sec
a/EC,5.700
Os-175/Ir-179
178.96532
180
52 sec
a/EC,3.700
Os-176/Ir-180
179.96320
181
51 sec
a/EC,5.200
Os-177/Ir-181
180.96317
182
2.2 min
a/EC,2.850
Os-178/Ir-182
181.96126
183
6.5 min
a/EC,4.600
Os-179/Ir-183
182.96172
184
17.3 min
a/EC,2.300
Os-180/Ir-184
183.95989
185
70.9 min
a/EC,3.800
Os-181/Ir-185
184.96068
186
2.0 hr
a/EC,1.380
Os-182/Ir-186
185.95943
187
2.35 hr
EC,3.110 MeV
Ir-187
186.96069
188
10.2 da
a/EC,2.809
Os-184/Ir-188
187.95939
189
10.87 hr
EC,1.971 MeV
Ir-189
188.96083
190 0.01%
6.5E11 yr
a,3.249 MeV
Os-186
189.95992
191
2.802 da
EC,1.019 MeV
Ir-191
190.96168
192 0.79%

Stable

191.96103
193
50 yr
EC,1.140 MeV
Ir-193
192.96298
194 32.9%

Stable

193.96266
195 33.8%

Stable

194.96477
196 25.3%

Stable

195.96493
197
19.8915 hr
B-,2.270 MeV
Au-197
196.96732
198 7.2%

Stable

197.96787
199
30.80 min
B-,1.702 MeV
Au-199
198.97057
200
12.5 hr
B-,7.200 MeV
Au-200
199.97142
201
2.5 min
B-,2.660 MeV
Au-201
200.97451
202
44 hr
B-,6.880 MeV
Au-202
202.0
MASS abund.
Halflife
Particle, Energy
Decay Product(s)
Isotopic Mass