Are the S-H bonds on hydrogen sulfide nonpolar covalent, polar covalent, or ionic?
Hydrogen Sulphide is H2S The bond between S-H is shared electrons. Hence covalent bond. Now, Sulfur is more electronegative than Hydrogen, meaning that it attracts electrons stronger than hydrogen. Hence, Hydrogen will have a slightly positive charge and Sulfur has a slightly negative charge. After the covalent bond, Sulfur now has 2 bonded pairs and 4 non-bonding electrons, this also implies that the 4 electrons becomes 2 regions of electronegativity. Thus Sulfur has a total of 4 regions of electron density. This means that the orientation of the regions form a trigonal pyramidal. Since 2 of the regions are electron pairs, the shape of the molecule is bent. Since the molecule is bent, polar moments of the H-S bond don’t cancel out, thus H2S is polar. Therefore hydrogen sulfide is polar covalent.
