# What is the valence shell electron pair repulsion theory (VSEPR) used for?

And thus water, which has 2 valence electrons from hydrogen, and 6 valence electrons from oxygen, i.e. 4 electron pairs, has an electronic geometry based on a tetrahedron. Its molecular geometry is bent because the $\angle H - O - H$ bond angle is compressed by the oxygen centred lone pairs, which are closer to the central oxygen atom, and thus a determinant in molecular geometry.