Which has greater bond angle h2s or h2o why also give the values?

H2O (water) has a greater bond angle than H2S (hydrogen sulfide).

Bond Angle Values

• H2O: 104.5°
• H2S: Approximately 92°–93°

Explanation

Both H2O and H2S have a bent molecular geometry with two lone pairs on the central atom, but:

• Oxygen (in H2O) is smaller and more electronegative than sulfur (in H2S).
• In H2O, the greater electronegativity and smaller atomic size of oxygen draw the bonding electron pairs closer, resulting in stronger repulsion between them and a larger bond angle.
• In H2S, sulfur is larger and less electronegative, so the bonding electron pairs are farther from the nucleus and experience less repulsion, leading to a smaller bond angle.