Atomic CN-Radius Correlation

2 Bond Relaxation in Length and Energy 11.2.1 Atomic CN-Radius Correlation 

Pauling [6] and Goldschmidt [7] indicated that, if the CN of an atom is reduced, the ionic and the metallic radius of an atom would shrink spontaneously. Therefore, the CN imperfection will shorten the remaining bonds between undercoordinated atoms, which is independent of the nature of the specific chemical bond [8] or the structural phase. Bond order loss-induced bond contraction applies to a liquid surface, gaseous phase, and homo- and hetero-junction interface in addition to atoms at the vacuum-solid interface. 

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