Atomic number:70

Group numbers:3

Period:6

Electronic configuration:[Xe] 4f¹⁴ 6s²

Formal oxidation number:+2 +3

Electronegativities:-

Atomic radius / pm:194

Relative atomic mass:173.04 ± 0.03

 

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.

Density / g dm^-3:6965 (293 K)

Molar volume / cm³mol^-1:24.84 (293 K)

Electrical resistivity / μΩcm:29 (20 °C)

Thermal conductivity / W m^-1K^-1:34.9

Melting point / °C:819

Boiling point / °C:1196

Heat of fusion / kJ mol^-1:9.2

Heat of vaporization / kJ mol^-1:159

Heat of atomization / kJ mol^-1:152.8

1st ionization energy / kJ mol^-1:603.44

2nd ionization energy / kJ mol^-1:1174.82

3rd ionization energy / kJ mol^-1:2416.97

in the atmosphere / ppm:-

in the Earth's crust / ppm:2.2

in the oceans / ppm:0.0000002