Francium is used only in specialized laboratories, for researches.
Francium is a chemical element without any importance.
francium is a rare element but might be useful in some ways.
The element is francium.
Francium is the chemical element with the atomic number 87.
As francium is a chemical element, it is made up of protons, neutrons and electrons.
Francium is a radioacive chemical element; francium is natural but also may be prepared in laboratory.
Francium is not a compound, but a chemical element.
The chemistry of francium is not known.
Francium is similar to cesium.
The element francium is named after France, where it was discovered in 1939 by Marguerite Perey.
Fr = Francium - the chemical element of atomic number 87, a radioactive member of the alkali metal group. Francium occurs naturally as a decay product in uranium and thorium ores.
Francium is the Latin name of this element.