Covalent structures (1) questions

1. Give the Lewis structure for a molecule of:(a) oxygen(b) nitrogen(c) tetrachloromethane(d) carbon dioxide(e) carbon monoxide2. One Lewis structure for the carbonate ion, CO32–, shows one double C=O bond and two single C-O bonds. Explain why the bond lengths of all the carbon to oxygen bonds in the carbonate ion are equal.3. Suggest why aluminium chloride, AlCl3, readily dimerises to form Al2Cl6.

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