11282 13 (a) There are several types of structure which apply to chemical formulae. The species present may be atoms, molecules or ions. In each of the following examples describe which type of structure it is and which type of species is present. sodium chloride diamond bromine In this question you will be assessed on using your written communication skills including the use of specialist scientific terms. [6] (b) The different types of structure have different physical properties. State four physical properties that depend upon structure. [3] 11282 [Turn over (c) The structure of sodium is shown below. + + + + + + + + + (i) Attach words to the labels shown. [2] (ii) Use this diagram to explain whether magnesium has a greater or lower conductivity than sodium. [2] (iii) Explain, using a labelled diagram, how you could compare the electrical conductivities of sodium and magnesium in the laboratory. [3]