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

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