70 Yb Ytterbium
Lanthanoid, mass: 173.04 u, 7 stable isotopes (168, 170, 171, 172, 173, 174, 176), abundance rank (earth/space): 55/67Click image to magnify. Ultrapure ytterbium, 2 grams. Original size in cm: 1 x 1.5
Ytterbium forms a protective oxide layer in air, which makes it quite resistant. It is not particularly rare for a lanthanoid, but difficult to separate from the others, so it is not used much. Its main application is as additive in special steels and for special permanent magnets. Ytterbium is about 25 - 30 % lighter (less dense) than its neighbors thulium and lutetium.
Left: Ytterbium, 0.5 x 1 cm.
Right: Crystals of a colorless ytterbium(III) compound, probably ytterbium acetate. Heap diameter 2 cm.
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Page last changed on March 05. 2016
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