Table 1: Calculation of evaporation heat.

Sample 𝑇 𝑃 𝑉 𝐿 Δ 𝑉 𝑟 𝑎 𝑉 𝑎 𝑉 f L 𝜎 𝜆 e x 𝜆 𝑇 1 𝛿 1 𝜆 𝑇 2 𝛿 2

Ne250,511,633941,601,030,605,51790154913,517561,87
Ne281,321,701641,601,030,674,451711144915,316652,67
Ar840,712,829611,921,781,0411,56459537716,760755,95
Ar901,342,905331,921,781,1210,56307518617,858976,49
Kr1160,743,4212591,981,961,4616,19176755617,783738,75
Kr1506,563,871641,981,961,9110,07886635019,572148,52
Xe1701,344,5010132,182,611,8918,0124461027117,5114947,65
Xe2169,195,101642,182,612,4910,010642848920,297498,39
H2253,213,1048,821,440,752,351,138367777,18310,56
H23211,04,257,881,440,753,500,1141936911,94043,65
N2680,293,3119402,092,301,0111,05822487016,355414,83
N2903,363,751822,092,301,456,165057396921,546717,64
O2900,992,827242,002,020,8010,06800545619,863935,99
O21002,552,923032,002,020,907,06490504922,260187,27
F2952,782,652612,072,240,4110,76775503025,864884,24
Cl21940,084,23193772,473,800,4334,0221611818517,9218631,34
CH41000,343,6424042,303,070,5715,28518739513,28929−4,83
CH415010,34,4495,42,303,071,375,06656525121,16675−0,28

𝑇 (K) is the evaporation temperature; 𝑃 *10−5 (Pa) is the pressure; 𝑉 𝐿 *105 (m3/mole) is the molar volume of liquid; Δ 𝑉 *105 (m3/mole) is the volume change in evaporation; 𝑟 *1010 (m) is the radius of atom (molecule); 𝜎 *103 (J/m2) is the surface tension coefficient; 𝜆 e x (J/mole) is the experimental molar evaporation heat; 𝜆 𝑇 1 (J/mole) is the molar evaporation heat calculated from the geometrical volume; 𝑉 L f *105 (m3/mole) is “free volume” of liquid; 𝜆 𝑇 2 (J/mole) is the molar evaporation heat calculated from “free volume”; 𝛿 1 and 𝛿 2 (%) are errors for 𝜆 𝑇 1 and 𝜆 𝑇 2 , respectively.