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Properties of substance:

neptunium(IV) fluoride

Synonyms:

neptunium tetrafluoride

Group of substances:

inorganic

Physical appearance:

monoclinic crystals

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

F4Np

Structural formula as text:

NpF4

Molar/atomic mass: 313.04

Melting point (°C):

830

Boiling point (°C):

1480

Solubility (g/100 g of solvent):

water: insoluble [Ref.]

Density:

6.8 (20°C, g/cm3)

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

-1687 (s)

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

151 (s)

References:

  1. Simons J.H. Fluorine Chemistry. - Vol. 5. - New York: Academic Press, 1964. - pp. 106
  2. Лидин Р.А., Андреева Л.Л., Молочко В.А. Константы неорганических веществ. - М.: Дрофа, 2006. - pp. 146 [Russian]
  3. Рабинович В.А., Хавин З.Я. Краткий химический справочник. - Л.: Химия, 1977. - pp. 87 [Russian]

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    © Collected Ruslan Anatolievich Kiper, burewestnik@mail.ru