* Electronegativity: Sulfur is more electronegative than hydrogen. This means sulfur has a stronger attraction for electrons.
* Polar Covalent Bond: In a polar covalent bond, the electrons are shared unequally. Since sulfur attracts the electrons more strongly, the shared electrons spend more time closer to the sulfur atom. This creates a partial negative charge (δ-) on the sulfur and a partial positive charge (δ+) on the hydrogen.
Key Points:
* Not Ionic: The difference in electronegativity between hydrogen and sulfur isn't large enough to create a full transfer of electrons, which would form an ionic bond.
* Polarity: The uneven sharing of electrons leads to a polar molecule with a slightly negative end (sulfur) and a slightly positive end (hydrogen).
Let me know if you'd like to know more about covalent bonds or electronegativity!