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Properties of substance:

erbium

Group of substances:

inorganic

Physical appearance:

hexagonal metal

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

Er

Structural formula as text:

Er

Molar/atomic mass: 167.26

Melting point (°C):

1525

Boiling point (°C):

2860

Solubility (g/100 g of solvent):

water: reaction [Ref.]

Numerical data:

Year of discovery: 1843

Density:

9.06 (20°C, g/cm3)

Electrode potential:

Er3+ + 3e- → Er, E = -2.296 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)):

73.2 (s)

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

28.12 (s)

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

19.9

ΔHsublimation (kJ/mol):

261

References:

  1. Гурвич Я.А. Справочник молодого аппаратчика-химика. - М.: Химия, 1991. - pp. 52 [Russian]
  2. Рабинович В.А., Хавин З.Я. Краткий химический справочник. - Л.: Химия, 1977. - pp. 114 [Russian]
  3. Химическая энциклопедия. - Т. 5. - М.: Советская энциклопедия, 1999. - pp. 487-488 [Russian]

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    © Collected Ruslan Anatolievich Kiper, burewestnik@mail.ru