Atomic overlap distribution

The quantity PJS can then be regarded as the electronic population of the atomic overlap distribution < > < >. Diagonal terms such as P S give the net electronic charge re-... 

So we see that an atomic orbital is simply a volume of space within which an electron may reside. Orbitals may therefore overlap one another in an atom. As shown in Figure 3-19, the electrons of a fluorine atom are distributed among its It, 2s, and three 2p orbitals. ... 

Overlap distribution in the bonding and aniibonding molecular ixbitals and the atomic orbitals... 

In gaseous BeCL, for example, the paired 2s electrons in the isolated Be atom are distributed into two sp hybrid orbitals, which form two Be—Cl bonds by overlapping with the 3p orbitals of two Cl atoms (Figure 11.2B-D). 

In considering the structures of molecules such as benzene, we saw fliat in some cases electrons are delocalized, or distributed, over several atoms. (Section 11.8) The bonding in metals can be thought of in a similar way. The valence atomic orbitals on one metal atom overlap with those on several nearest neighbors, which in turn overlap with atomic orbitals on still other atoms. 

Figure Bl.23.2. (a) Shadow cone of a stationary Pt atom in a 4 keV Ne ion beam, appearing with the overlapping of ion trajectories as a fiinction of the impact parameter. The initial position of the target atom that recoils in the collision is indicated by a solid circle, (b) Plot of the nonnalized ion flux distribution density across the shadow cone in (a). The flux density changes from 0 inside the shadow cone, to much greater than l in the focusing region, converging to 1 away from the shadow cone edge, (c) Blocking cones...

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