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