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Properties of substance:

scandium

Group of substances:

inorganic

Physical appearance:

hexagonal metal

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

Sc

Structural formula as text:

Sc

Molar/atomic mass: 44.96

Melting point (°C):

1541

Boiling point (°C):

2850

Solubility (g/100 g of solvent):

water: reaction [Ref.]

Numerical data:

Year of discovery: 1879
Ionization Potentials (Electronvolts): 6.54

Density:

3.02 (25°C, g/cm3)

Vapour pressure (Torr):

0.01 (1427°C)
0.1 (1597°C)
1 (1800°C)
10 (2160°C)
100 (2380°C)

Electrode potential:

Sc3+ + 3e- → Sc, E = -2.03 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)):

34.8 (s)

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

25.5 (s)

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

14.1

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

315

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

379 (g)

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

174.7 (g)

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

22.1 (g)

References:

  1. Гурвич Я.А. Справочник молодого аппаратчика-химика. - М.: Химия, 1991. - pp. 51 [Russian]
  2. Комиссарова Л.Н. Неорганическая и аналитическая химия скандия. - М.: Эдиториал УРСС, 2001. - pp. 8-42 [Russian]
  3. Рабинович В.А., Хавин З.Я. Краткий химический справочник. - Л.: Химия, 1977. - pp. 99 [Russian]
  4. Терехова В.Ф., Буров И.В. Физико-химические свойства и применение редкоземельных металлов. - М.: ГосИНТИ, 1962. - pp. 72-84 [Russian]
  5. Химическая энциклопедия. - Т. 4. - М.: Советская энциклопедия, 1995. - pp. 359-360 [Russian]

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    © Collected Ruslan Anatolievich Kiper, burewestnik@mail.ru