A covalent bond is formed between H and Br The structure of HBr is as follows H —Br Formal charge for atoms are the charges for individual atoms in compounds. Formal charge can be calculated as follows ; Formal charge of atom = number of valence electrons -( number of bonds + number of lone pair electrons) H has 1 valence electron, 1 bond and 0 number of lone pair electrons Formal charge of H = 1 -1 -0 = 0 H has 0 charge
