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Properties of substance:

lutetium

Group of substances:

inorganic

Physical appearance:

hexagonal metal

Empirical formula (Hill's system for organic substances):

Lu

Structural formula as text:

Lu

Molar/atomic mass: 174.967

Melting point (°C):

1660

Boiling point (°C):

3410

Numerical data:

Year of discovery: 1907
Superconducting temperature (K): 0.1

Density:

9.849 (20°C, g/cm3)

Vapour pressure (Torr):

0.01 (451°C)
0.1 (1287°C)
1 (1453°C)
10 (1649°C)
100 (1938°C)

Electrode potential:

Lu3+ + 3e- → Lu, E = -2.255 V (water, 25°C)

Standard molar enthalpy (heat) of formation ΔfH0 (298.15 K, kJ/mol):

0 (s)

Standard molar Gibbs energy of formation ΔfG0 (298.15 K, kJ/mol):

0 (s)

Standard molar entropy S0 (298.15 K, J/(mol·K)):

49.4 (s)

Molar heat capacity at constant pressure Cp (298.15 K, J/(mol·K)):

27 (s)

Molar enthalpy (heat) of fusion ΔfusH (kJ/mol):

18.8

Enthalpy (heat) of vaporization ΔvapH (kJ/mol):

322

Standard molar enthalpy (heat) of formation ΔfH0 (298.15 K, kJ/mol):

428 (g)

Standard molar entropy S0 (298.15 K, J/(mol·K)):

184.7 (g)

Molar heat capacity at constant pressure Cp (298.15 K, J/(mol·K)):

20.9 (g)

References:

  1. Рабинович В.А., Хавин З.Я. Краткий химический справочник. - Л.: Химия, 1977. - pp. 77 [Russian]
  2. Химическая энциклопедия. - Т. 2. - М.: Советская энциклопедия, 1990. - pp. 619 [Russian]

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    © Collected Ruslan Anatolievich Kiper, burewestnik@mail.ru