Angular volume

Consider first what happens at large lattice spacing. Recall that for D— oo the electron in a hydrogen atom is localized with respect to the nucleus at some distance r (in the sense that Ar/(r) — 0). Two hydrogen atoms at large internuclear separation a r are therefore like two dipolar diatomics molecules. Due to angular volume element... 

The relative angular volumes of a bonding pair electron domain versus a lone-pair (nonbonding pair) electron domain [Blatt Communications]. 

While electrons in a bond are held by the attractive forces exerted by two nuclei, the lone pair of electrons being associated with only one nucleus tend to occupy a greater angular volume. 

The distribution of chain segments relative to the reference axis yields the fraction of chains in each angular volume element and is expressed as (198)... 

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