Markovnikov's rule: when an unsymmetrical alkene reacts with a hydrogen halide to give an alkyl halide, the H adds to the carbon with more hydrogens.

Hydrohalogenation of Alkenes and Markovnikov's Rule – Master Organic Chemistry

Hydrohalogenation of Alkenes and Markovnikov's Rule – Master Organic Chemistry

10.9-11 Addition of HX to Alkenes (Hydrohalogenation) and Markovnikov's Rule

Hydrohalogenation Of Alkenes - Reaction Mechanism - MCAT and Organic Chemistry Study Guides, Videos, Cheat Sheets, tutoring and more

Oxymercuration Demercuration Mechanism of Alkenes & Alkoxymercuration Reaction Organic Chemistry

Hydrohalogenation of Alkenes and Markovnikov's Rule – Master Organic Chemistry

Hydrohalogenation: Definition, Examples, and Mechanism

What is selectivity? Is there any effect of selectivity in the halogenation reaction?

Hydrohalogenation Of Alkenes - Reaction Mechanism - MCAT and Organic Chemistry Study Guides, Videos, Cheat Sheets, tutoring and more

Alkene Hydrohalogenation (Alkene + HX) – Periodic Chemistry