(E3.1) Molecular geometry is the geometry of arrangements of atoms in molecules. Molecular geometry includes measurements like bond angle, bond length, and torsional angles. These attributes influence several properties of molecules, such as reactivity, color, and polarity. As an example of the molecular geometry of a molecule, consider the methane CH4 molecule, as illustrated in Figure. H H H According to the Valence Shell Electron Repulsion (VSEPR) model, atoms of one type that surround single atoms of a different type do so in a way that positions them as far apart as possible. This means that the hydrogen atoms in the methane molecule arrange themselves at the vertices of a regular tetrahedron. The bond angle for methane is the angle determined by two consecutive hydrogen atoms and the central carbon atom. To determine the bond angle for methane, we can place the center carbon atom at the point (?,7,?) and the hydrogen atoms at the points (0,0,0), (1,1,0), (1,0,1), and (0,1,1). Find the bond angle for methane to the nearest tenth of a degree