Yb - Ytterbium

	Atomic number	-	70			Density	g/mL	6	.98
	Atomic weight	u	173	.04		Melting point	K	1097
	Bonding radius	A	1	.74		Boiling point	K	1467
	Atomic radius	A	2	.4		Heat of vaporization	kJ/mol	128	.9
	Ionization Potential	V	6	.254		Heat of fusion	kJ/mol	7	.66
	Electronegativity	-	1	.1		Specific heat	J/gK	0	.15
	The oxide is a weak base.					Crystal are face centered cubic.
	Electron config. : [Xe] 4f14 6s2
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Actinides **

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

151 1.6 sec EC/ECp,9.100 Tm-151/Er-150 150.95523	152 3.04 sec EC/ECp,4.500 Tm-152/Er-151 151.95018	153 4.2 sec a/EC,4.200 Er-149/Tm-153 152.94922	154 0.404 sec a/EC,5.474 Er-150/Tm-154 153.94624	155 1.75 sec a/EC,6.000 Er-151/Tm-155 154.94557	156 26.1 sec a/EC,3.570 Er-152/Tm-156 155.94276	157 38.6 sec a/EC,5.500 Er-153/Tm-157 156.94266
158 1.49 min a/EC,2.670 Er-154/Tm-158 157.93985	159 1.58 min EC,5.050 MeV Tm-159 158.94023	160 4.8 min EC,2.300 MeV Tm-160 159.93756	161 4.2 min EC,4.150 MeV Tm-161 160.93785	162 18.87 min EC,1.690 MeV Tm-162 161.93574	163 11.05 min EC,3.370 MeV Tm-163 162.93626	164 75.8 min EC,1.000 MeV Tm-164 163.93452
165 9.9 min EC,2.762 MeV Tm-165 164.93539	166 56.7 hr EC,3.040 MeV Tm-166 165.93388	167 17.5 min EC,1.954 MeV Tm-167 166.93494	168 0.13% Stable 167.93389	169 32.026 da EC,2.124 MeV Tm-169 168.93518	170 3.05% Stable 169.93475	171 14.3% Stable 170.93632
172 21.9% Stable 171.93637	173 16.12% Stable 172.93820	174 31.8% Stable 173.93885	175 4.185 da B-,2.390 MeV Lu-175 174.94127	176 12.7% B-Stable Lu-176 175.94256	177 1.911 hr B-,1.399 MeV Lu-177 176.94525	178 74 min B-,1.468 MeV Lu-178 177.94664
179 8.0 min B-,2.400 MeV Lu-179 178.94986	180 2.4 min B-,1.405 MeV Lu-180 179.95202	MASS abund. Halflife Particle, Energy Decay Product(s) Isotopic Mass

Updated by clh on 2/6/98. This is not a publication of Phoenix College.