description: |-
  Standard entropies of the elements in their standard states. Used by the
  `compound-lattice` ThermoPhase model and the `HKFT` pressure dependent standard state
  (PDSS) model.

  All values are in J/kmol/K.

source: |-
  Chase, M W, Jr. (1998). NIST-JANAF Thermochemical Tables, Fourth Edition, J.
      Phys. Chem. Ref. Data, Monograph 9, pp. 1-1951. Data also available from
      https://janaf.nist.gov/periodic_table.html.

  Robie, R A, and Hemingway, B S (1995). Thermodynamic Properties of Minerals and
      Related Substances, USGS Bulletin 2131. doi:10.3133/b2131.

  Robie, R A, and Hemingway, B S (1979), Thermodynamic Properties of Minerals and
      Related Substances at 298.15 K and 1 bar (10^5 Pascals) Pressure and at Higher
      Temperatures, USGS Bulletin 1452. doi:10.3133/b1452

  Guillaumont, R; Fanghänel, T; Neck, V; Fuger, J; Palmer, D A; Grenthe, I; Rand, M H
      (2003). Update on the Chemical Thermodynamics of Uranium, Neptunium, Plutonium,
      Americium and Technetium. OECD Nuclear Energy Agency.

elements:
- symbol: H
  entropy298: 65.340e+03
  source: 1/2 H2 gas from Chase (1998), p. 1310.
- symbol: D
  entropy298: 72.480e+03
  source: 1/2 D2 gas from Chase (1998), p. 1040.
- symbol: Tr
  source: No reference state data found for Tr.
- symbol: He
  entropy298: 126.152e+03
  source: Chase (1998), p. 1361.
- symbol: Li
  entropy298: 29.085e+03
  source: Chase (1998), p. 1493.
- symbol: Be
  entropy298: 9.440e+03
  source: Chase (1998), p. 361.
- symbol: B
  entropy298: 5.834e+03
  source: Chase (1998), p. 177.
- symbol: C
  entropy298: 5.740e+03
  source: Chase (1998), p. 550.
- symbol: N
  entropy298: 95.8045e+03
  source: 1/2 N2 gas from Chase (1998), p. 1621.
- symbol: O
  entropy298: 102.5735e+03
  source: 1/2 O2 gas from Chase (1998), p. 1745.
- symbol: F
  entropy298: 101.3945e+03
  source: Chase (1998), p. 1099.
- symbol: Ne
  entropy298: 146.327e+03
  source: Chase (1998), p. 1695.
- symbol: Na
  entropy298: 51.455e+03
  source: Chase (1998), p. 1637.
- symbol: Mg
  entropy298: 32.671e+03
  source: Chase (1998), p. 1529.
- symbol: Al
  entropy298: 28.275e+03
  source: Chase (1998), p. 59.
- symbol: Si
  entropy298: 18.820e+03
  source: Chase (1998), p. 1881.
- symbol: P
  entropy298: 41.077e+03
  source: Chase (1998), p. 1817.
- symbol: S
  entropy298: 32.056e+03
  source: Chase (1998), p. 1859.
- symbol: Cl
  entropy298: 111.535e+03
  source: 1/2 Cl2 gas from Chase (1998), p. 811.
- symbol: Ar
  entropy298: 154.845e+03
  source: Chase (1998), p. 175.
- symbol: K
  entropy298: 64.670e+03
  source: Chase (1998), p. 1465.
- symbol: Ca
  entropy298: 41.588e+03
  source: Chase (1998), p. 703.
- symbol: Sc
  source: No reference state data for this element.
- symbol: Ti
  entropy298: 30.759e+03
  source: Chase (1998), p. 1907.
- symbol: V
  entropy298: 28.936e+03
  source: Chase (1998), p. 1917.
- symbol: Cr
  entropy298: 23.618e+03
  source: Chase (1998), p. 959.
- symbol: Mn
  entropy298: 32.010e+03
  source: Chase (1998), p. 1571.
- symbol: Fe
  entropy298: 27.321e+03
  source: Chase (1998), p. 1221.
- symbol: Co
  entropy298: 30.067e+03
  source: Chase (1998), p. 943.
- symbol: Ni
  entropy298: 29.870e+03
  source: Chase (1998), p. 1697.
- symbol: Cu
  entropy298: 33.164e+03
  source: Chase (1998), p. 1005.
- symbol: Zn
  entropy298: 41.717e+03
  source: Chase (1998), p. 1935.
- symbol: Ga
  entropy298: 40.838e+03
  source: Chase (1998), p. 1253.
- symbol: Ge
  entropy298: 31.09e+03
  source: Robie and Hemingway (1995), p. 88.
- symbol: As
  entropy298: 35.69e+03
  source: Robie and Hemingway (1995), p. 69.
- symbol: Se
  entropy298: 42.27e+03
  source: Robie and Hemingway (1995), p. 107
- symbol: Br
  entropy298: 76.103e+03
  source: 1/2 Br2 gas from Chase (1998), p. 470.
- symbol: Kr
  entropy298: 164.084e+03
  source: Chase (1998), p. 1491.
- symbol: Rb
  entropy298: 76.778e+03
  source: Chase (1998), p. 1849.
- symbol: Sr
  entropy298: 55.694e+03
  source: Chase (1998), p. 1891.
- symbol: Y
  source: No reference state data found for Y.
- symbol: Zr
  entropy298: 38.869e+03
  source: Chase (1998), p. 1943.
- symbol: Nb
  entropy298: 36.464e+03
  source: Chase (1998), p. 1675.
- symbol: Mo
  entropy298: 28.605e+03
  source: Chase (1998), p. 1577.
- symbol: Ru
  entropy298: 28.53e+03
  source: Robie and Hemingway (1979), p. 92.
- symbol: Rh
  entropy298: 31.54e+03
  source: Robie and Hemingway (1979), p. 90.
- symbol: Pd
  entropy298: 37.82e+03
  source: Robie and Hemingway (1979), p. 84.
- symbol: Ag
  entropy298: 42.55e+03
  source: Robie and Hemingway (1995), p. 67.
- symbol: Cd
  entropy298: 51.80e+03
  source: Robie and Hemingway (1995), p. 79.
- symbol: In
  entropy298: 57.84e+03
  source: Robie and Hemingway (1979), p. 64.
- symbol: Sn
  entropy298: 51.18e+03
  source: Robie and Hemingway (1995), p. 109.
- symbol: Sb
  entropy298: 45.52e+03
  source: Robie and Hemingway (1995), p. 106.
- symbol: Te
  entropy298: 49.71e+03
  source: Robie and Hemingway (1995), p. 111.
- symbol: I
  entropy298: 58.071e+03
  source: 1/2 I2 liquid from Chase (1998), p. 1413.
- symbol: Xe
  entropy298: 169.684e+03
  source: Chase (1998), p. 1933.
- symbol: Cs
  entropy298: 85.147e+03
  source: Chase (1998), p. 977.
- symbol: Ba
  entropy298: 62.475e+03
  source: Chase (1998), p. 319.
- symbol: La
  entropy298: 56.90e+03
  source: Robie and Hemingway (1979), p. 68.
- symbol: Ce
  entropy298: 72.00e+03
  source: Robie and Hemingway (1995), p. 80.
- symbol: Pr
  entropy298: 73.93e+03
  source: Robie and Hemingway (1979), p. 85.
- symbol: Nd
  entropy298: 71.09e+03
  source: Robie and Hemingway (1979), p. 77.
- symbol: Sm
  entropy298: 69.50e+03
  source: Robie and Hemingway (1979), p. 100.
- symbol: Eu
  entropy298: 80.79e+03
  source: Robie and Hemingway (1979), p. 52.
- symbol: Gd
  entropy298: 40.83e+03
  source: Robie and Hemingway (1979), p. 55.
- symbol: Tb
  entropy298: 73.30e+03
  source: Robie and Hemingway (1979), p. 104.
- symbol: Dy
  entropy298: 74.89e+03
  source: Robie and Hemingway (1979), p. 50.
- symbol: Ho
  entropy298: 75.02e+03
  source: Robie and Hemingway (1979), p. 62.
- symbol: Er
  entropy298: 73.18e+03
  source: Robie and Hemingway (1979), p. 51.
- symbol: Tm
  entropy298: 74.01e+03
  source: Robie and Hemingway (1979), p. 109.
- symbol: Yb
  entropy298: 59.83e+03
  source: Robie and Hemingway (1979), p. 115.
- symbol: Lu
  entropy298: 50.96e+03
  source: Robie and Hemingway (1979), p. 70.
- symbol: Hf
  entropy298: 43.560e+03
  source: Chase (1998), p. 1363.
- symbol: Ta
  entropy298: 41.471e+03
  source: Chase (1998), p. 1899.
- symbol: W
  entropy298: 32.660e+03
  source: Chase (1998), p. 1925.
- symbol: Re
  entropy298: 36.53e+03
  source: Robie and Hemingway (1979), p. 89.
- symbol: Os
  entropy298: 32.64e+03
  source: Robie and Hemingway (1979), p. 81.
- symbol: Ir
  entropy298: 35.48e+03
  source: Robie and Hemingway (1979), p. 65.
- symbol: Pt
  entropy298: 41.63e+03
  source: Robie and Hemingway (1995), p. 103.
- symbol: Au
  entropy298: 47.49e+03
  source: Robie and Hemingway (1995), p. 70.
- symbol: Hg
  entropy298: 76.028e+03
  source: Chase (1998), p. 1373.
- symbol: Tl
  entropy298: 64.18e+03
  source: Robie and Hemingway (1979), p. 108.
- symbol: Pb
  entropy298: 64.785e+03
  source: Chase (1998), p. 1835.
- symbol: Bi
  entropy298: 56.74e+03
  source: Robie and Hemingway (1995), p. 74.
- symbol: Th
  entropy298: 51.080e+03
  source: Guillaumont et al., (2003), Table 8-1, p. 145.
- symbol: Pa
  source: No standard state thermodynamic data for this element.
- symbol: U
  entropy298: 50.20e+03
  source: Guillaumont et al. (2003), Table 3-1, p. 45.
- symbol: E
  entropy298: 0.0e+03
  source: |-
    The entropy is zero so as not to overcount. The 1/2 H2(g) entropy is
    handled elsewhere.
