Why is h2s bent It is a colorless hydrogen chalcogenide gas, and is toxic, corrosive, and flammable. Despite the electron group geometry being tetrahedral due to the four electron pairs, the molecular geometry is bent as the lone pairs บริษัท นีโอนิคส์ จำกัด จัดจำหน่ายเครื่องมือทางวิทยาศาสตร์ Hydrogen sulfide (preferred IUPAC name and American English) or hydrogen sulphide (Commonwealth English) is a chemical compound with the formula H 2 S. Also, H2S has a bent structure. Trace amounts in ambient atmosphere have a characteristic foul odor of rotten eggs. Feb 5, 2024 · H2S has a bent or angular molecular shape due to the two lone pairs of electrons on the central sulfur atom, which cause the hydrogen atoms to repel and adopt a configuration that minimizes electron pair repulsion. For a more rigorous method you would likely have to run some quantum chemical computations, e. Feb 18, 2024 · The molecular shape of a hydrogen sulfide molecule (H2S) is bent. You'd have a net non zero dipole moment, which Jun 3, 2025 · This is also influenced by the fact that sulfur is larger and more diffused than oxygen (in water, H₂O), which slightly affects electron cloud distribution. To a sulfur atom at the center, 2 lone pairs of electrons are attached, which distorts the overall molecular shape and geometry. Because 4 electrons which make 2 lone pairs around a sulfur atom are arranged in a tetrahedral geometry. In fact the difference in electronegativity between H and S is less than 0. However sulfur is less electronegative than oxygen. Hydrogen sulfide (H2S) has a bent shape with a bond angle of 92. Jun 12, 2025 · Thus, an H-S bond is non-polar, but the molecule overall is polar due to the asymmetric bent shape of the H2S molecule. Are the lone pairs in water equivalent?. 10. Hence, Sulfur attracts more electrons and gains a partial negative charge. We can use the Walsh diagram to determine the energy trends based on which orbitals are occupied. [11] Swedish chemist Carl Wilhelm Scheele is credited with having 5. Is H2S bent or tetrahedral? In the molecule H2S, four electron group around the sulfur atom are arranged in a tetrahedral geometry, but the shape of the molecule is called "bent". The H2S Lewis structure and its geometry help to understand the bonding, reactivity, and properties of the molecule. However, if you meant polar as in ionic bond, then no H2S is not, it have polar covalent bond. What is molecular shape of H2S ? Hydrogen sulphide has a structure that is comparable to water's. This geometry arises from the presence of two hydrogen atoms bonded to a central sulfur atom, along with two lone pairs of electrons on the sulfur. See full list on scienceoxygen. The VSEPR theory predicts its electron geometry as tetragonal and its steric number as 4. Sulfur in H2S has four electron pairs, with two of these being lone pairs and the others being bonded to hydrogen atoms. A mixture of two hydrogen atoms and one sulphur atom makes up the Lewis structure of hydrogen sulphide. It is made up of two hydrogen atoms and the structure of Hydrogen Sulfide. This is because it has four electron pairs around the sulfur atom, two of which are bonded with hydrogen atoms and two are lone pairs, leading to a bent molecular geometry despite the tetrahedral arrangement of electron pairs. 1° due to the repulsion between lone pairs and bonds. Understand what the chemical compound H2S is called, the properties such as molar mass, structure, formation, use, and toxicity of hydrogen sulfide. The molecular geometry of hydrogen sulfide (H 2 S) is bent or angular. g. so, the correct option is C) Bent. What is the bond angle in H2S? Be is in group II and it has two electrons; therefore, addition of two H atoms makes H:Be:H (although Be doesn't have an octet in this structure) so it has two regions of high electron density (sp hybridization) and that is a linear molecule. com Learn how to draw the Lewis structure and determine the molecular geometry and hybridization of H2S based on the VSEPR theory. H2S has a net dipole moment greater than 0. So why don't they repel and move to Learn about H2S. The H-S covalent bond is a polar bond (AFAIK) because the electronegativity of H and S are different. In H2S the central atom is the sulfur which has 2 lone pairs and single bonds on each side, forcing into a bent geometry. The electronegativity difference between hydrogen and sulfur creates polar bonds, resulting in an overall dipole moment. g hydrogen sulfide unlike water. The electron geometry for H2S is tetrahedral. What is the molecular geometry of H2S? H2S has a bent or V-shaped molecular geometry due to the two lone pairs on the sulfur atom. When determining the geometry of a lewis diagram it is important to consider the unbonded electrons around the central atom as well at the bonded electrons. Six valence electrons make Jun 9, 2024 · The shape of H2S is bent similar to water, which is very polar. Oxygen is in group VI, it has six electrons, H2O has 4 regions of high electron density which makes the electronic geometry tetrahedral (sp3 Nov 3, 2024 · It says that there is no hybridization in for e. Dec 21, 2023 · Because of its bent shape, the dipole moment is created between the H-S bonds. 2) and Sulfur (2. Jun 19, 2025 · H2S possesses a bent, angular or V-shape. May 22, 2024 · How many sulfur atoms are in the chemical reaction H2S plus SO2 plus H2? There are 2 sulfur atoms in the chemical reaction H2S plus SO2 plus H2. From EN alone we might expect $\ce {HCl}$ to be more polar but a book says that the bent structure of $\ce {H2S}$ gives rise to its polarity - which is also apparently more than $\ce {HCl}$. Note that there are two types of bent molecules too! One which has 1 lone pair and 2 single bonds, and one that has 2 lone pairs and 2 single bonds (these are BOTH bent) but the hybridization is different. This shape arises due to the presence of two hydrogen atoms bonded to a central sulfur atom, along with two lone pairs of electrons on the sulfur atom. How many lone pairs are on the central sulfur (S) atom in H2S? The central sulfur (S) atom in H2S has two lone pairs of electrons. Hydrogen is a partial positive charge as it is now left with fewer positive charges. 58) that results in a non zero dipole moment. The electron pair causes repulsion, therefore, the shape of H2S appears like bent molecular geometry. What is the shape of the H2S molecule? The shape of the H 2 S molecule is bent or V-shaped. For a qualitative method, you have Walsh diagrams which have been explained at Why does bond angle decrease in the order H2O, H2S, H2Se?. Both atoms bond with Hydrogen in a way that results in a tetrahedral electron-pair geometry which is perceived as a bent molecular shape due to the presence of two lone pairs. Jun 3, 2025 · In summary, H₂S has a bent molecular shape due to two lone pairs on sulfur and a bond angle of approximately 92°, explained by VSEPR theory and lone pair repulsion. May 27, 2024 · H2S (hydrogen sulfide) is a polar molecule due to its bent molecular geometry and the difference in electronegativity between hydrogen and sulfur atoms. May 22, 2020 · If you want to know and understand H2S Lewis structure, molecular geometry, polarity, and other relevant details then you should read this article about Hydrogen Sulfide. Jan 13, 2021 · Since there are 2 lone pairs of electrons and 2 bonds, the resulting molecular geometry is bent. 7. H2S is a slightly polar molecule because of its bent shaped geometrical structure and the small difference between the electronegativity of Hydrogen (2. The chemical compound hydrogen sulfide (H2S) has the chemical formula H2S. I am not fully satisfied with this approach and I feel there must be a way to explain it using bond energies - MO theory (either canonical or localized). Sep 26, 2024 · The Lewis structure of Hydrogen sulfide, H2S, features one sulfur atom single-bonded to two hydrogen atoms, suggesting a bent geometry around the sulfur atom due to lone pairs. Thus Option ''B'' is correct. The molecular shape of hydrogen sulfide, H2S, according to the Valence Shell Electron Pair Repulsion (VSEPR) model, is bent or V shaped. 6. So I am wondering why H2S and H2O have such similar MO diagrams yet completely different bond angles An explanation of the molecular geometry for the H2S ion (Hydrogen sulfide) including a description of the H2S bond angles. So you would have a dipole moment of one bond that doesn't cancel with the other bond as they aren't exactly opposite. In summary, H₂S has a bent molecular shape due to two lone pairs on sulfur and a bond angle of approximately 92°, explained by VSEPR theory and lone pair repulsion. The greater the separation of charges more is the dipole moment between the atoms. Aug 22, 2023 · The bent shape of H2O and H2S is explained by VSEPR theory and their equal number of valence electrons. Oct 10, 2024 · Is h2s polar or nonpolar? The molecular formula is H₂S, and its Lewis structure shows a bent shape. Sep 24, 2025 · The geometry of a molecule is determined by which possible structure is lowest in energy. 3: Why is BeH₂ Linear and H₂O Bent? is shared under a license and was authored, remixed, and/or curated by LibreTexts. Sep 15, 2021 · When you see models of water you see something like this: The hydrogens in the water molecule become negatively charged because the oxygen pulls electrons more. Apr 14, 2020 · Most revolve around molecular orbital theory. The electron geometry for the Hyd Jan 25, 2023 · The molecular geometry of H2S is bent shape or V-shape. This results in a slight separation of The molecular geometry of H2S is bent. The main particle, sulphur, is composed of two lone hydrogen atoms that are joined together by a single bond. 4 (S . The bent molecular shape of H2O and H2S, despite the S atom having 16 electrons and the O atom having 8, is Nov 30, 2024 · Discover the H2Se electron geometry shape with a simple guide, exploring its molecular structure, bond angles, and polarity, to understand the sulfur compound's properties and behavior. Jul 20, 2020 · H2S is a slightly polar molecule because of its bent shaped geometrical structure and the small difference between the electronegativity of Hydrogen (2. Find out why H2S is bent and what are the possible bond angles and hybridization types. 3: BeH₂ is Linear and H₂O is Bent is shared under a license and was authored, remixed, and/or curated by Mark Tuckerman & Emily V Eames.