Question

what is the h - c - h angle in methane, ch₄? * 180° 120° 109.5° 90°

Explanation:

Methane (\(CH_4\)) has a tetrahedral molecular geometry. In a tetrahedral structure, the bond angles between the hydrogen - carbon - hydrogen (\(H - C - H\)) are \(109.5^{\circ}\). This is a well - known result from VSEPR (Valence Shell Electron Pair Repulsion) theory which predicts the shapes of molecules based on the repulsion between electron pairs around the central atom.

Answer:

\(109.5^{\circ}\) (the third option in the given multiple - choice list)