What Shape Does H2S Have?

H2S has a Bent (V-shaped) molecular geometry (AX2E2, tetrahedral) with a bond angle of ≈92°. The central sulfur carries 2 bonding domain(s) and 2 lone pair(s) — 4 electron domains in total. Sulfur is larger and far less electronegative than oxygen: its lone pairs sit in diffuse orbitals and the bonding pairs are pulled toward h, so the compression goes much further than in water.

Hybridisation is conventionally described as largely unhybridised p bonding (the near-right angle supports this). Polarity: Weakly polar, and it cannot build a hydrogen-bond network.

1. Molecular Identity and Key Parameters

Molar mass is the average value rounded for procurement use. Hybridisation labels are the conventional VSEPR-level description; orbital treatment becomes more nuanced at higher levels of theory.

2. Drawing the Lewis Structure of H2S, Step by Step

1. Count valence electrons: 6 (S) + 2×1 (H) = 8 — a total of 8 electrons (4 pairs) must be placed.
2. Build the skeleton: place the sulfur at the centre and attach the terminal atoms with single bonds; hydrogen is never a central atom. Each single bond consumes 2 electrons.
3. Complete terminal octets: distribute the remaining electrons as lone pairs on the terminal atoms first (hydrogens already carry their duet from the single bond).
4. Satisfy the central atom: Two S–H bonds plus two lone pairs on sulfur.
5. Verify: Octet satisfied on sulfur. Apply the standard formal-charge check (valence − nonbonding − half of bonding electrons) to confirm the drawn form.

A worked diagram of this molecule is kept in the companion guide: H2S Lewis structure.

3. VSEPR Analysis: Why H2S Is bent (v-shaped)

VSEPR theory counts electron domains — every σ bond counts once regardless of bond order, and every lone pair counts once. H2S has 4 such domains around the sulfur: 2 bonding and 2 lone. 4 domains correspond to a tetrahedral electron-domain arrangement; with 2 lone pairs excluded from the shape the observed molecular shape is bent (v-shaped) (AX2E2).

Bond angle: ≈92° because sulfur is larger and far less electronegative than oxygen: its lone pairs sit in diffuse orbitals and the bonding pairs are pulled toward H, so the compression goes much further than in water.

Polarity: Weakly polar, and it cannot build a hydrogen-bond network.

4. The Most Common Mistake When Drawing H2S

5. Why the Geometry Matters in Practice

Feedstock of sulfur and sulfide chemistry; supplied in cylinders or diluted, with toxicity and odorant handling clauses on the datasheet.

Structure-level identity is exactly what a purchase order has to fix: the same molecular formula can hide isomers, hydrates or salt forms with different handling profiles. Before ordering, match CAS (7783-06-4), assay, water content and container rating against the datasheet, and request the COA batch that will ship.

Compare Hydrogen Sulfide (H2S) supply offers →

6. Quick FAQs on H2S

7. References

1. IUPAC / Gillespie, Assessment of the VSEPR model. Basis of AXE notation and lone-pair ordering. VSEPR entry
2. PubChem compound record for Hydrogen Sulfide (H2S). Registry number, formula and computed descriptors. PubChem 7783-06-4
3. Companion Lewis-structure guide on this site. Worked diagram for H2S. Lewis structure H2S