* Valence Electrons: Valence electrons are the electrons in the outermost energy level of an atom. They are the ones involved in chemical bonding.
* Hydrogen (H): Hydrogen has 1 valence electron.
* Bromine (Br): Bromine is in Group 17 (VIIA) of the periodic table, which means it has 7 valence electrons.
* Total Valence Electrons: When H and Br combine to form HBr, they share their valence electrons. This results in a total of 1 + 7 = 8 valence electrons in the molecule.
