Here's why:
* Electronegativity: Chlorine is much more electronegative than hydrogen. This means chlorine has a stronger attraction for electrons.
* Sharing Electrons: Instead of one atom completely taking an electron from the other (like in an ionic bond), chlorine and hydrogen share an electron pair to form a stable molecule of hydrogen chloride (HCl).
However, due to the significant difference in electronegativity, the shared electrons are more attracted to the chlorine atom, creating a polar covalent bond. This means there's a slight positive charge on the hydrogen atom and a slight negative charge on the chlorine atom.
