Relative atomic mass: 173.04 +- 0.03

English: Ytterbium
French: Ytterbium
Croatian: Iterbij
German: Ytterbium
Italian: Itterbio
Spanish: Iterbio

Atomic number: 70
Group numbers: 3
Period: 6
Standard state (20 oC): solid

Discovery: 1878 Jean Charles Galinard de Marignac (CH)
Ytterbium was discovered by Jean Charles Galinard de Marignac (CH) in 1878. Named after Ytterby, a village in Sweden. It is a silvery, lustrous, malleable and ductile metal that oxidizes slowly in air and reacts with water. Ytterbium dust is flammable. Ytterbium is found in minerals such as yttria, monazite, gadolinite and xenotime. It is used in metallurgical and chemical experiments. The price of 99.9 % pure ytterbium ingot is 188.50 for 25 g.
Electronic configuration: [Xe] 4f14 6s2
Formal oxidation number: +2 +3
Atomic radius: 194 pm

Electronegativities: -
Thermal conductivity: 34.9 W/(m K)
Electrical resistivity (20 oC): 29 microOhm cm

Melting point: 819 oC
Boiling point: 1196 oC

Heat of fusion: 9.2 kJ/mol
Heat of vaporization: 159 kJ/mol
Heat of atomization: 152.8 kJ/mol

69Tm <= 70Yb => 71Lu

ASCII Periodic Table of the Elements
6 Jan. 2020
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