The most famous element that can form allotropes is [[carbon]], which can form four. The following elements can also form allotropes: [[phosphorus]] (3), [[oxygen]] (3), [[sulphur]] (4), and [[plutonium]] (7). | The most famous element that can form allotropes is [[carbon]], which can form four. The following elements can also form allotropes: [[phosphorus]] (3), [[oxygen]] (3), [[sulphur]] (4), and [[plutonium]] (7). |