Explain addition of HBr to Propene with the ionic mechanism

Explanation

Electrophillic addition of HBr to `CH_(3)-CH=CH_(2)` Molecule: A pair of electron from the doubled bond attacks the electrophillic HBr to produce an achiral trigonoal Planarcarbocation intermediate. The halide ion `(Br^(-))` then adds to either face on the +vely charged carbon forming hte alkyl halide.
`underset("Propene")(CH_(3)-CH=CH_(2)+HBr) to underset("Less stable carbocation")(CH_(3)-CH_(2))-overset(+)(CH_(2))+CH_(3)underset("More stable carbocation")(-CH-CH_(3)-Br^(-))`
`CH_(3)-CH-CH_(3)+Br^(-) to underset("2-Bromopropane")(CH_(3)-underset(Br)underset(|)(CH)-CH_(3))`