Diatomic molecules ground state electronic configurations

EXAMPLE 3.7 Sample exercise Deducing the ground-state electron configuration of a diatomic molecule... 

The ground-state electron configurations of diatomic molecules are deduced by forming molecular orbitals from all the valence-sbell atomic orbitals of the two atoms and adding the valence electrons to the molecular orbitals in order of increasing energy, in accord ivith the building-up principle. 

Deduce the ground-state electron configurations of Period 2 diatomic molecules (Toolbox 3.2 and Example 3.7). 

The ground-state electron configurations of diatomic molecules are deduced by forming molecular orbitals from all the valence-shell... 

Table 6.3. Ground state electron configurations and states for homonuclear diatomic molecules in the first row of the periodic table...

We are now ready to study the ground-state electron configuration of molecules containing second-period elements. We will consider only the simplest case, that of homonuclear diatomic molecules, or diatomic molecules containing atoms of the same elements. 

Fig. 1.23 Changes in the energy levels of the MOs and the ground state electronic configurations of homonudear diatomic molecules involving first-row / -block elements.

Table 20.2 Ground-State Electron Configurations of Homonuclear Diatomic Molecules...

Give the term symbol for the ground-state electron configuration of each of the second-row homonuclear diatomic molecules (Li2 through F2). 

We can write configurations for diatomic molecules by naming the orbitals (cr, etc.), using superscripts to show how many electrons each orbital contains. Here is the configuration for the ground state of O2 ... 

Fig. 1.11. Ground state and excited charge resonant states of a model doubly-charged diatomic molecule. The electronic configurations of the states are shown schematically in a 1-D double-well potential...

If the electrons occupy orbitals different from the most stable (ground) electronic state, the bonding between the atoms also changes. Therefore, an entirely different potential energy surface is produced for each new electronic configuration. This is illustrated in Figure 6.6 for a diatomic molecule. 

Figure 28-2 Schematic representation of the electronic configurations of ground and lowest excited singlet and triplet states of a diatomic molecule with two

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