Why is ionic bonding referred to as non directional?
Ionic bonding is non-directional because an ion has the same attraction from all directions for an ion of opposite charge.
In the same way, a magnet attracts iron filings from all directions.
This means that packing efficiency in the crystal lattice determines the arrangement of ions in a crystal.
There is no preferred direction for the bonds.
Thus, in a crystal of
In a crystal of cesium chloride, a cesium ion has eight chloride atoms as nearest neighbours.
The differences arise because