Mendeleev's Periodic Table > Re - Rhenium

Re - Rhenium

A very dense transition metal, discovered in 1925 by Noddack, Tacke and Berg in Germany. Rhenium is silvery white with a metallic lustre; its density is exceeded only by that of platinum, iridium, and osmium, and its melting point is exceeded only by that of tungsten and carbon. It is expensive but useful as a trace alloying agent.

Atomic number - 75 Density g/mL 21
Atomic weight u 186 .207 Melting point K 3453
Bonding radius A 1 .28 Boiling point K 5869
Atomic radius A 1 .97 Heat of vaporization kJ/mol 715
Ionization Potential V 7 .88 Heat of fusion kJ/mol 33 .2
Electronegativity - 1 .9 Specific heat J/gK 0 .13
The oxide is mildly acidic. Crystal are hexagonal.
Electron config. : [Xe] 4f14 5d5 6s2

Isotopes of Re (Rhenium) :

MASS abundancy
Halflife
Particle, Energy
Decay Product(s)
Isotopic Mass		 160
0.79 msec
a/p,1.290 MeV
Ta-156/W-159
159.98153 		161
15 msec
a,6.440 MeV
Ta-157
160.97767 		162
0.10 sec
a/EC,11.500
Ta-158/W-162
161.97573 		163
260 msec
a/EC,6.010
Ta-159/W-163
162.97196
MASS abundancy
Halflife
Particle, Energy
Decay Product(s)
Isotopic Mass		 164
0.53 sec
a/EC,5.920
Ta-160/W-164
163.97047 		165
2.4 sec
a/EC,8.120
Ta-161/W-165
164.96705 		166
2.8 sec
a,5.640 MeV
Ta-162
165.96580 		167
3.4 sec
a/EC,5.240
Ta-163/W-167
166.96259
MASS abundancy
Halflife
Particle, Energy
Decay Product(s)
Isotopic Mass		 168
4.4 sec
a/EC,9.100
Ta-164/W-168
167.96156 		169
8.1 sec
a/EC,6.600
Ta-165/W-169
168.95882 		170
9.2 sec
EC,8.300 MeV
W-170
169.95813 		171
15.2 sec
EC,5.670 MeV
W-171
170.95544
MASS abundancy
Halflife
Particle, Energy
Decay Product(s)
Isotopic Mass		 172
15 sec
EC,7.300 MeV
W-172
171.95534 		173
1.98 min
EC,4.800 MeV
W-173
172.95308 		174
2.40 min
EC,6.500 MeV
W-174
173.95308 		175
5.89 min
EC,4.300 MeV
W-175
174.95136
MASS abundancy
Halflife
Particle, Energy
Decay Product(s)
Isotopic Mass		 176
5.3 min
EC,5.600 MeV
W-176
175.95157 		177
14 min
EC,3.400 MeV
W-177
176.95027 		178
13.2 min
EC,4.660 MeV
W-178
177.95085 		179
19.5 min
EC,2.710 MeV
W-179
178.94998
MASS abundancy
Halflife
Particle, Energy
Decay Product(s)
Isotopic Mass		 180
2.44 min
EC,3.800 MeV
W-180
179.95078 		181
19.9 hr
EC,1.739 MeV
W-181
180.95006 		182
64.0 hr
EC,2.800 MeV
W-182
181.95120 		183
70.0 da
EC,1.070 MeV
W-183
182.95082
MASS abundancy
Halflife
Particle, Energy
Decay Product(s)
Isotopic Mass		 184
38.0 da
EC,1.483 MeV
W-184
183.95252 		185 37.40%

Stable

184.95295 		186
89.25 hr
B-/EC,1.069
Os-186/W-186
185.95498 		187 62.60%
4.35E10 yr
a/B-,1.311
Ta-183/Os-187
186.95575
MASS abundancy
Halflife
Particle, Energy
Decay Product(s)
Isotopic Mass		 188
17.021 hr
B-,2.120 MeV
Os-188
187.95811 		189
24.3 hr
B-,1.009 MeV
Os-189
188.95922 		190
3.1 min
B-,3.150 MeV
Os-190
189.96182 		191
9.8 min
B-,2.045 MeV
Os-191
190.96312
MASS abundancy
Halflife
Particle, Energy
Decay Product(s)
Isotopic Mass		 192
16 sec
B-,4.170 MeV
Os-192
191.96595