Organic compounds that contain the halogens can have chloro, bromo or iodo in their names. (a) The following diagram shows the structure of 1-bromobutane. H H H . H-C -C-Br H . H H (i) Draw the structure of an isomer of this compound. (ii) Draw a possible structure of a dibromobutane. (iii) Name two chemicals that react together to make only one product dibromobutane. ...... and [4] (b) Draw a diagram to show the arrangement of the valency electrons in the covalent compound chloromethane. Use o to represent an electron from carbon Use x to represent an electron from hydrogen Use to represent an electron from chlorine