Curium is an artificial element and is very rare.
Curium is extremely dangerous and expensive.
Curium is a member of the actinoids family.
Curium and berkelium are artificial chemical elements, very rare, unstable and radioactive. Members of the actinides group.
Curium, the chemical element is only curium !
Curium is not for sale.
Cm from CuriuM.
Curium is a metal. It belongs to actinides.
Curium is a solid metal.
Also curium.
Curium is an artificial element.
Curium has a silvery appearance.
Curium is a solid metal.