Appendix-F
Properties of the Elements
All physical properties are for a pressure of 1 atm unless otherwise specified.
| Element | Symbol | Atomic Number (Z) | Molar Mass (g/mol) | Density (\(g/cm^3\) at \(20^\circ C\)) | Melting Point (\(^\circ C\)) | Boiling Point (\(^\circ C\)) | Specific Heat \(J/(g\cdot^\circ C)\)at \(25^\circ\)) |
|---|---|---|---|---|---|---|---|
| Hydrogen | H | 1 | 1.00797 | \(0.08375\times10^{-3}\) | -259.19 | -252.7 | 14.4 |
| Helium | He | 2 | 4.0026 | \(0.1664\times10^{-3}\) | -269.7 | -268.9 | 5.23 |
| Lithium | Li | 3 | 6.939 | 0.534 | 180.55 | 1300 | 3.58 |
| Beryllium | Be | 4 | 9.0122 | 1.848 | 1287 | 2770 | 1.83 |
| Boron | B | 5 | 10.811 | 2.34 | 2077 | 4000 | 1.11 |
| Carbon | C | 6 | 12.01115 | 2.26 | 3727 | 4830 | 0.691 |
| Nitrogen | N | 7 | 14.0067 | \(1.1649\times 10^{-3}\) | -210 | -195.8 | 1.03 |
| Oxygen | O | 8 | 15.9994 | \(1.3318\times 10^{-3}\) | -218.80 | -183.0 | 0.913 |
| Fluorine | F | 9 | 18.9984 | \(1.696\times 10^{-3}(0^\circ C)\) | -219.6 | -188.2 | 0.753 |
| Neon | Ne | 10 | 20.183 | \(0.8387\times 10^{-3}\) | -248.597 | -246.0 | 1.03 |