In the sodium chloride structure each `Na_(o+)` ion is surrounded by six `Cl^(ɵ)` ions nearest neighbours and ……….. `Na^(o+)` ions next nearest neighbours.

In NaCl crystal each Cl^- ion is surrounded by

In NaCl ionic crystal, each Na^(+) ion is surrounded by __________ Cl^(-) ions and cach Cl^(-) ion is surrounded by __________ Na^(+) ions.

How many Cl^(-) ions are there around Na^(+) ion in NaCl crystal ?

Potassium crystallises in a bcc lattice as shown in figure : (a) What is the distance the nearest neighbours ? (b) What is the distance between the next nearest neighbours ? (c) How many nearest neighbours does each potassium atom have ? (d) How many next nearest neighbours does each potassium atom have ?

How many Na^(o+) ions sorround each CI^(Θ) ion in NaCI crystal lattice ?