The standard entropy (1/2 H2gas) was taken from the NIST-JANAF Handbook (Chase 1998), Journal of Physical and Chemical Reference Data, Monograph 9, p. 1310. G_0 = -19.48112E6 J kmol-1 The standard entropy (1/2 D2 gas) was taken from the NIST-JANAF Handbook (Chase 1998), Journal of Physical and Chemical Reference Data, Monograph 9, p. 1040. There is no reference state thermodynamic data tabulated for this element. The standard entropy was taken from the NIST-JANAF Handbook (Chase 1998), Journal of Physical and Chemical Reference Data, Monograph 9, p. 1361. The standard entropy was taken from the NIST-JANAF Handbook (Chase 1998), Journal of Physical and Chemical Reference Data, Monograph 9, p. 1493. The standard entropy was taken from the NIST-JANAF Handbook (Chase 1998), Journal of Physical and Chemical Reference Data, Monograph 9, p. 361. The standard entropy was taken from the NIST-JANAF Handbook (Chase 1998), Journal of Physical and Chemical Reference Data, Monograph 9, p. 177. The standard entropy was taken from the NIST-JANAF Handbook (Chase 1998), Journal of Physical and Chemical Reference Data, Monograph 9, p. 550. The standard entropy (1/2 N2 gas) was taken from the NIST-JANAF Handbook (Chase 1998), Journal of Physical and Chemical Reference Data, Monograph 9, p. 1621. The standard entropy (1/2 O2 gas) was taken from the NIST-JANAF Handbook (Chase 1998), Journal of Physical and Chemical Reference Data, Monograph 9, p. 1745. The standard entropy was taken from the NIST-JANAF Handbook (Chase 1998), Journal of Physical and Chemical Reference Data, Monograph 9, p. 1099. The standard entropy was taken from the NIST-JANAF Handbook (Chase 1998), Journal of Physical and Chemical Reference Data, Monograph 9, p. 1695. The standard entropy was taken from the NIST-JANAF Handbook (Chase 1998), Journal of Physical and Chemical Reference Data, Monograph 9, p. 1637. The standard entropy was taken from the NIST-JANAF Handbook (Chase 1998), Journal of Physical and Chemical Reference Data, Monograph 9, p. 1529. The standard entropy was taken from the NIST-JANAF Handbook (Chase 1998), Journal of Physical and Chemical Reference Data, Monograph 9, p. 59. The standard entropy was taken from the NIST-JANAF Handbook (Chase 1998), Journal of Physical and Chemical Reference Data, Monograph 9, p. 1881. The standard entropy was taken from the NIST-JANAF Handbook (Chase 1998), Journal of Physical and Chemical Reference Data, Monograph 9, p. 1817. The standard entropy was taken from the NIST-JANAF Handbook (Chase 1998), Journal of Physical and Chemical Reference Data, Monograph 9, p. 1859. The standard entropy (1/2 Cl2 gas) was taken from the NIST-JANAF Handbook (Chase 1998), Journal of Physical and Chemical Reference Data, Monograph 9, p. 811. The standard entropy was taken from the NIST-JANAF Handbook (Chase 1998), Journal of Physical and Chemical Reference Data, Monograph 9, p. 175. The standard entropy was taken from the NIST-JANAF Handbook (Chase 1998), Journal of Physical and Chemical Reference Data, Monograph 9, p. 1465. The standard entropy was taken from the NIST-JANAF Handbook (Chase 1998), Journal of Physical and Chemical Reference Data, Monograph 9, p. 703. No reference state data for this element in the NIST-JANAF Handbook (Chase 1998), Journal of Physical and Chemical Reference Data, Monograph 9. The standard entropy was taken from the NIST-JANAF Handbook (Chase 1998), Journal of Physical and Chemical Reference Data, Monograph 9, p. 1907. The standard entropy was taken from the NIST-JANAF Handbook (Chase 1998), Journal of Physical and Chemical Reference Data, Monograph 9, p. 1917. The standard entropy was taken from the NIST-JANAF Handbook (Chase 1998), Journal of Physical and Chemical Reference Data, Monograph 9, p. 959. The standard entropy was taken from the NIST-JANAF Handbook (Chase 1998), Journal of Physical and Chemical Reference Data, Monograph 9, p. 1571. The standard entropy was taken from the NIST-JANAF Handbook (Chase 1998), Journal of Physical and Chemical Reference Data, Monograph 9, p. 1221. The standard entropy was taken from the NIST-JANAF Handbook (Chase 1998), Journal of Physical and Chemical Reference Data, Monograph 9, p. 943. The standard entropy was taken from the NIST-JANAF Handbook (Chase 1998), Journal of Physical and Chemical Reference Data, Monograph 9, p. 1697. The standard entropy was taken from the NIST-JANAF Handbook (Chase 1998), Journal of Physical and Chemical Reference Data, Monograph 9, p. 1005. The standard entropy was taken from the NIST-JANAF Handbook (Chase 1998), Journal of Physical and Chemical Reference Data, Monograph 9, p. 1935. The standard entropy was taken from the NIST-JANAF Handbook (Chase 1998), Journal of Physical and Chemical Reference Data, Monograph 9, p. 1253. The standard entropy was taken from Robie and Hemingway (1995), Thermodynamic Properties of Minerals and Related Substances, USGS Bulletin 2131, p. 88. The standard entropy was taken from Robie and Hemingway (1995), Thermodynamic Properties of Minerals and Related Substances, USGS Bulletin 2131, p. 69. The standard entropy was taken from Robie and Hemingway (1995), Thermodynamic Properties of Minerals and Related Substances, USGS Bulletin 2131, p. 107 The standard entropy (1/2 Br2 gas) was taken from the NIST-JANAF Handbook (Chase 1998), Journal of Physical and Chemical Reference Data, Monograph 9, p. 470. The standard entropy was taken from the NIST-JANAF Handbook (Chase 1998), Journal of Physical and Chemical Reference Data, Monograph 9, p. 1491. The standard entropy was taken from the NIST-JANAF Handbook (Chase 1998), Journal of Physical and Chemical Reference Data, Monograph 9, p. 1849. The standard entropy was taken from the NIST-JANAF Handbook (Chase 1998), Journal of Physical and Chemical Reference Data, Monograph 9, p. 1891. No reference state data found for Y. The standard entropy was taken from the NIST-JANAF Handbook (Chase 1998), Journal of Physical and Chemical Reference Data, Monograph 9, p. 1943. The standard entropy was taken from the NIST-JANAF Handbook (Chase 1998), Journal of Physical and Chemical Reference Data, Monograph 9, p. 1675. The standard entropy was taken from the NIST-JANAF Handbook (Chase 1998), Journal of Physical and Chemical Reference Data, Monograph 9, p. 1577. The standard entropy was taken from Robie and Hemingway (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, p. 92. The standard entropy was taken from Robie and Hemingway (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, p. 90. The standard entropy was taken from Robie and Hemingway (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, p. 84. The standard entropy was taken from Robie and Hemingway (1995), Thermodynamic Properties of Minerals and Related Substances, USGS Bulletin 2131, p. 67. The standard entropy was taken from Robie and Hemingway (1995), Thermodynamic Properties of Minerals and Related Substances, USGS Bulletin 2131, p. 79. The standard entropy was taken from Robie and Hemingway (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, p. 64. The standard entropy was taken from Robie and Hemingway (1995), Thermodynamic Properties of Minerals and Related Substances, USGS Bulletin 2131, p. 109. The standard entropy was taken from Robie and Hemingway (1995), Thermodynamic Properties of Minerals and Related Substances, USGS Bulletin 2131, p. 106. The standard entropy was taken from Robie and Hemingway (1995), Thermodynamic Properties of Minerals and Related Substances, USGS Bulletin 2131, p. 111. The standard entropy (1/2 I2) was taken from the NIST-JANAF Handbook (Chase 1998), Journal of Physical and Chemical Reference Data, Monograph 9, p. 1413. The standard entropy was taken from the NIST-JANAF Handbook (Chase 1998), Journal of Physical and Chemical Reference Data, Monograph 9, p. 1933. The standard entropy was taken from the NIST-JANAF Handbook (Chase 1998), Journal of Physical and Chemical Reference Data, Monograph 9, p. 977. The standard entropy was taken from the NIST-JANAF Handbook (Chase 1998), Journal of Physical and Chemical Reference Data, Monograph 9, p. 319. The standard entropy was taken from Robie and Hemingway (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, p. 68. The standard entropy was taken from Robie and Hemingway (1995), Thermodynamic Properties of Minerals and Related Substances, USGS Bulletin 2131, p. 80. The standard entropy was taken from Robie and Hemingway (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, p. 85. The standard entropy was taken from Robie and Hemingway (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, p. 77. The standard entropy was taken from Robie and Hemingway (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, p. 100. The standard entropy was taken from Robie and Hemingway (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, p. 52. The standard entropy was taken from Robie and Hemingway (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, p. 55. The standard entropy was taken from Robie and Hemingway (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, p. 104. The standard entropy was taken from Robie and Hemingway (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, p. 50. The standard entropy was taken from Robie and Hemingway (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, p. 62. The standard entropy was taken from Robie and Hemingway (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, p. 51. The standard entropy was taken from Robie and Hemingway (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, p. 109. The standard entropy was taken from Robie and Hemingway (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, p. 115. The standard entropy was taken from Robie and Hemingway (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, p. 70. The standard entropy was taken from the NIST-JANAF Handbook (Chase 1998), Journal of Physical and Chemical Reference Data, Monograph 9, p. 1363. The standard entropy was taken from the NIST-JANAF Handbook (Chase 1998), Journal of Physical and Chemical Reference Data, Monograph 9, p. 1899. The standard entropy was taken from the NIST-JANAF Handbook (Chase 1998), Journal of Physical and Chemical Reference Data, Monograph 9, p. 1925. The standard entropy was taken from Robie and Hemingway (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, p. 89. The standard entropy was taken from Robie and Hemingway (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, p. 81. The standard entropy was taken from Robie and Hemingway (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, p. 65. The standard entropy was taken from Robie and Hemingway (1995), Thermodynamic Properties of Minerals and Related Substances, USGS Bulletin 2131, p. 103. The standard entropy was taken from Robie and Hemingway (1995), Thermodynamic Properties of Minerals and Related Substances, USGS Bulletin 2131, p. 70. The standard entropy was taken from the NIST-JANAF Handbook (Chase 1998), Journal of Physical and Chemical Reference Data, Monograph 9, p. 1373. The standard entropy was taken from Robie and Hemingway (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, p. 108. The standard entropy was taken from the NIST-JANAF Handbook (Chase 1998), Journal of Physical and Chemical Reference Data, Monograph 9, p. 1835. The standard entropy was taken from Robie and Hemingway (1995), Thermodynamic Properties of Minerals and Related Substances, USGS Bulletin 2131, p. 74. The standard entropy was taken from the OECD-NEA handbook (Guillaumont et al., 2003) "UPDATE ON THE CHEMICAL THERMODYNAMICS OF URANIUM, NEPTUNIUM, PLUTONIUM, AMERICIUM AND TECHNETIUM", Table 8-1, p. 145. No standard state thermodynamic data for this element. The standard entropy was taken from the OECD-NEA handbook (Guillaumont et al., 2003) "UPDATE ON THE CHEMICAL THERMODYNAMICS OF URANIUM, NEPTUNIUM, PLUTONIUM, AMERICIUM AND TECHNETIUM", Table 3-1, p. 45. The entropy is zero so as not to overcount. The 1/2 H2(g) entropy is handled elsewhere.