Here's why:
* Central Atom: Sulfur (S) is the central atom.
* Valence Electrons: Sulfur has 6 valence electrons, and each hydrogen has 1.
* Bonding: Sulfur forms two single bonds with the two hydrogen atoms, using two of its valence electrons.
* Lone Pairs: Sulfur has two remaining valence electrons, which form a lone pair.
* Electron Pair Geometry: According to VSEPR theory, the four electron pairs (two bonding pairs and two lone pairs) around the sulfur atom will arrange themselves in a tetrahedral shape to minimize repulsion.
Important Note: While the electron pair geometry is tetrahedral, the molecular geometry of H₂S is bent or angular. This is because the lone pairs on sulfur repel the bonding pairs, causing the H-S-H bond angle to be less than 109.5 degrees.
