Francium is a chemical element with symbol Fr and atomic number 87. It used to
be known as ... Francium is an alkali metal whose chemical properties mostly
resemble those of caesium. A heavy element...
Francium is extremely rare. Because of this its chemical and physical properties
are not known. It has been studied by radiochemical techniques, which show ...
Get periodic table information on the chemical and physical properties of the
element francium (Fr), and its discovery.
Sep 11, 2013 ... Properties and sources of the element francium. ... Discovery: Marguerite Perey
discovered francium in 1939 at the Curie Institute in Paris.
Comprehensive information for the element Francium - Fr is provided by this
page including scores of properties, element names in many languages, most ...
Francium (previously known as eka-cesium and actinium K) is a radioactive
metal and ... Very little is known of the physical and chemical properties of
This WebElements periodic table page contains physical properties for the
Since its properties should track those of caesium rather closely, he called it eka-
caesium. Marguerite Perey noticed an α decay product from actinium, now ...
A fresh francium surface would soon tarnish because of reaction with oxygen and
.... Francium compound properties; Nuclear properties; Isotopes and NMR.
Commercially, there are no uses for francium, due to its rarity and instability. It is
used for research purposes only....