Ions that would have a tetrahedral shape are those that have four electron pairs arranged around a central atom. This is known as sp3 hybridization. Some examples of ions with a tetrahedral shape include:

- Ammonium ion (NH4+)

- Sulfate ion (SO4^2-)

- Phosphate ion (PO4^3-)

- Chlorate ion (ClO3-)

- Carbonate ion (CO3^2-)

- Silicate ion (SiO4^4-)

In each of these ions, the central atom (N, S, P, Cl, C, or Si) is surrounded by four electron pairs, which arrange themselves in a tetrahedral shape to minimize repulsion between the electron pairs.