Question
in my the previous query , i want to ask the second nearest, third nearest, 4th nearest neighbour atoms/ cordination no. of NaCl, CsCl, ZnS, CaF2, Li2o.
Joshi sir comment
second, third and fourth coordination number means to count the no. of atoms of either Cl or Na, having second, third and fourth closest distance
for NaCl first coordination number = 6 (6 faces) distance (a/2)
second coordination number = 12 (12 edges) distance (a/√2)
third coordination number = 8 (8 corners) distance (a√3/2)
fourth coordination number = 6 ( 6 centre) distance (a)
similarly try for others