The chemistry of francium is practically unknown.
Francium is the official name and the chemical symbol is Fr.
The chemical symbol of francium is Fr correct !
Francium is a radioacive chemical element; francium is natural but also may be prepared in laboratory.
The chemical symbol of francium is Fr.
Francium is not a compound, but a chemical element.
This compound was not prepared; the chemical formula will be FrF.
The chemistry of francium is not known; francium has properties similar to caesium.
The chemistry of francium is practically unknown.
Francium is a natural chemical element.
Francium is not an important chemical element.
Fr is the symbol for the radioactive element francium.
The chemical symbol Fr is derived of course from francium - the first two letters; it is a rule in the system of naming chemical elements.