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Ytterbium Facts

Chemical & Physical Properties


This is a photo of ytterbium metal.

Ytterbium is a lustrous bright silvery metal that darkens upon exposure to air. This is a photo of ytterbium metal.

Tomihahndorf, Free Documentation License
Periodic Table of the Elements


Atomic Number: 70

Symbol: Yb

Atomic Weight: 173.04

Discovery: Jean de Marignac 1878 (Switzerland)

Electron Configuration: [Xe] 4f14 6s2

Element Classification: Rare Earth (Lanthanide)

Word Origin: Named for the Swedish village of Ytterby.

Density (g/cc): 6.9654

Melting Point (K): 1097

Boiling Point (K): 1466

Appearance: silvery, lustrous, malleable, and ductile metal

Atomic Radius (pm): 194

Atomic Volume (cc/mol): 24.8

Ionic Radius: 85.8 (+3e) 93 (+2e)

Specific Heat (@20°C J/g mol): 0.145

Fusion Heat (kJ/mol): 3.35

Evaporation Heat (kJ/mol): 159

Pauling Negativity Number: 1.1

First Ionizing Energy (kJ/mol): 603

Oxidation States: 3, 2

Lattice Structure: Face-Centered Cubic

Lattice Constant (Å): 5.490

References: Los Alamos National Laboratory (2001), Crescent Chemical Company (2001), Lange's Handbook of Chemistry (1952), CRC Handbook of Chemistry & Physics (18th Ed.)

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