# According to the VSEPR theory, a molecule with the molecular formula of A_2 has what shape?

Mar 27, 2016

This is not actually due to valence shell electron pair repulsion (VSEPR), or "vesper", theory: in this molecule there would be only one region of electron density between the two atoms; notice the unusual turn of phrase since the covalent bond in this region could be a single bond (as in ${\text{H}}_{2}$), a double bond (as in ${\text{O}}_{2}$), or even a triple bond (as in ${\text{N}}_{2}$).
This of course not only applies to molecules with a molecular formula of ${\text{A}}_{2}$ but also those of $\text{AB}$, such as the cyanide ion (${\text{CN}}^{-}$).