The chemistry of francium is not experimentally known; it is only estimated. Francium should be have properties similar to caesium.
It is supposed that francium can form compounds with all nonmetals (excepting noble gases).
The element is francium.
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 not an important chemical element.
Francium exist in infinitesimal traces in thorium and uranium ores.
The element that has the element name of France is francium.
The chemistry of francium is not known but it is supposed that francium can react with the majority of nonmetals.
The chemistry of francium is not experimentally known; it is only estimated. Francium should be have properties similar to caesium.
The chemistry of francium is practically unknown.
The element is francium.
Francium is the chemical element with the atomic number 87.
Francium is a radioactive element.
Francium is a chemical element without any importance.
Francium (Fr) is a natural radioactive element, extremely rare.
Francium is a radioacive chemical element; francium is natural but also may be prepared in laboratory.
As francium is a chemical element, it is made up of protons, neutrons and electrons.
Francium is not a compound, but a chemical element.
The chemistry of francium is not known.