In this section is when Hydrogen halides are added across the double bond to form a haloalkane

- Br is more electronegative than H- therefore the HBr is polar
- electrophile- H (delta +) in this example
- H (delta +) of HBr attracted to C=C
- bond formed carbocation
- at the same time Br is bonded across the double bond
- at the same time Br is bonded across the double bond

Glossary: Electronegative- a chemical property that describes the tendency of an atom or a functional group to attract electrons (or electron density) towards itself Hydrogen halides- HCl (hydrogen chloride), HBr (hydrogen bromide) and HI (hydrogen iodine) Carboncation- an ion with a positively-charged carbon atom |