Francium is an extremely rare, short-lived radioactive alkali metal known only from trace natural production and laboratory study.
Atomic number
87
Category
Alkali metal
Period
7
Group
1
State
Solid
Fun facts about Francium
It is formed transiently in radioactive decay chains.
No bulk sample can be accumulated because its isotopes decay rapidly.
Its chemistry is inferred and studied atom by atom.
Common uses of Francium
Fundamental atomic research only
Where Francium sits in the periodic table
Francium is classified as a alkali metal in period 7 and group 1 of the periodic table. Under the conditions represented in this reference, its state is solid.
Quick chemistry revision
For quick revision, pair the symbol Fr with atomic number 87 and the listed atomic mass [223]. The summary, facts, and uses above keep those element properties together in one reference.