* Electronegativity: Electronegativity is the ability of an atom to attract electrons in a bond. Bromine (Br) is more electronegative than hydrogen (H). This means bromine has a stronger pull on the shared electrons in the H-Br bond.
* Polar Covalent Bond: Due to the difference in electronegativity, the shared electrons in the H-Br bond are pulled closer to the bromine atom. This creates a polar covalent bond where the bromine end of the molecule becomes slightly negative (δ-) and the hydrogen end becomes slightly positive (δ+).
In Summary:
* Hydrogen (H) side: Has a partial positive charge (δ+)
* Bromine (Br) side: Has a partial negative charge (δ-)
The molecule as a whole is neutral, but the unequal sharing of electrons results in a charge separation.
