Edexcel A-Level Chemistry AS 3.12 The Different Structures Formed By Giant Lattices of Carbon Atoms Topic Practice

An answer that makes reference to the following:

- each silicon atom has four silicon atoms in a tetrahedral arrangement as nearest silicon atom neighbours or each silicon is bonded to four oxygen atoms in a tetrahedral arrangement

or

each carbon is bonded to 4 carbon atoms in a tetrahedral arrangement (in diamond)

Allow "giant tetrahedral structure(s)"

Ignore just "the silicon atoms are in a diamond structure"