Ionization potential of hydrogen

IH, the ionization potential of hydrogen, accordingly is equal to 13.54 volts. 

The bond energy of the H-H bond is 431 kJ/mol. Electron affinity of hydrogen is low (-72 kJ/mol), where hydrogen reacts in this marmer only with the most reactive metals. The ionization potential of hydrogen is relatively high (1312 kJ/mol). Hydrogen bums with a veiy hot flame and explosion in air ... 

THE IONIZATION POTENTIALS OF HYDROGEN AS INTERPRETED BY POSITIVE RAY ANALYSIS... 

In comparing the value of (Jmin = —4 75 eV with the value of U0 = — 31-7 eV cited at the end of the last chapter, notice that U0 refers to a zero of energy in which the molecule is entirely dispersed into protons and electrons that are all far from one another, whereas Umin refers to a zero of energy in which two hydrogen atoms are separated. Hence the difference corresponds to twice the ionization potential of hydrogen 2 x 13-5 eV. Umin is called the dissociation energy of the molecule. 

TTie valence state is a hydrogen atom with a Is spatial function and a 50% probability of having each of spin a or spin jS.The valence-state ionization potential of hydrogen is thus 13.6 eV. 

An increasing basicity is associated with an increasing PA. The proton affinity may be expressed as a function of the energy of homolytic dissociation D of BH, the electronic affinity EA of B and the ionization potential / of hydrogen ... 

Hogness, T.R., Lunn, E.G. (1924) The ionization potentials of hydrogen as interpreted by positive ray analysis. Proceedings of the National Academy of Sciences of the United States of America, 10,398-405. 

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