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2.3 Basic structure types

Bonding in ionic structures - repulsion

Repulsion arising from overlap of electron clouds

Because the electron density of atoms
decreases exponentially towards zero at

large distances from the nucleus the

r 0 Born repulsion shows the same

behaviour

r

approximation:

B

V Born 

r n

B and n are constants for a given atom

type; n can be derived from
compressibility measurements (~8)