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Solid State Structures Based on Close Packing


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Questions

Work through the questions below using the animated models.

1. What is the relationship between the:
(a) sodium chloride and nickel arsenide structures?

(b) calcium fluoride and sodium oxide structures?

(c) zinc blende and wurtzite zinc sulfide structures?

(d) cadmium chloride and cadmium iodide structures?

2. Complete the table below. For part (f), you will need to deduce a pattern from the values for (a) - (e).

Structure
Number of Ions in Formula
Cations Anions
Coordination Number
CationAnion
(a) Sodium Chloride (NaCl) 1 1 6 6
(b) Calcium Fluoride (CaF2) 1 2
(c) Sodium Oxide (Na2O) 2 1
(d) Cadmium Chloride (CdCl2) 1 2
(e) Rutile (TiO2) 1 2
(f) Corundum (Al2O3) 2 3 6





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