2
1 Molecules and Intermolecular Interactions
0
2 0
4 0
6 0
8 0
6
7
8
9
Z
[ΔE / (Z+N)] / MeV
Fig. 1.1 Binding energy per nucleon of most stable nuclei (having the longest half life) of elements
as a function of atomic number
10
20
30
0
10
20
30
Z
ΔE
1 /eV
He
Ne
Ar
Zn
Kr
Fig. 1.2 First ionization energy of neutral atom as a function of atomic number
solely on the atomic number Z . The ionization energy is shown in Fig. 1.2. The figure
indicates the energy scale of several eV, which is much (ca. 10
−5 ) smaller than that
of nuclear reactions.
Atoms may bind through a chemical bond, resulting in the formation of a molecule.
It has often been assumed that the energy gain upon the molecular formation is well
approximated by a sum of those of formed chemical bonds, though some fundamental
1 Molecules and Intermolecular Interactions
0
2 0
4 0
6 0
8 0
6
7
8
9
Z
[ΔE / (Z+N)] / MeV
Fig. 1.1 Binding energy per nucleon of most stable nuclei (having the longest half life) of elements
as a function of atomic number
10
20
30
0
10
20
30
Z
ΔE
1 /eV
He
Ne
Ar
Zn
Kr
Fig. 1.2 First ionization energy of neutral atom as a function of atomic number
solely on the atomic number Z . The ionization energy is shown in Fig. 1.2. The figure
indicates the energy scale of several eV, which is much (ca. 10
−5 ) smaller than that
of nuclear reactions.
Atoms may bind through a chemical bond, resulting in the formation of a molecule.
It has often been assumed that the energy gain upon the molecular formation is well
approximated by a sum of those of formed chemical bonds, though some fundamental