An Element classified as an Alkali Metal is a very reactive metal that does not occur freely in nature. Alkali metals are soft, malleable, ductile, and are good conductors of heat and electricity.

Brief Facts about the Discovery and History of the Element Francium
Francium was discovered by Marguerite Derey of the Curie Institute in Paris in 1939.

Occurrence of the element Francium
Obtained from the decay of actinium
Naturally occurs in uranium minerals
Less than one ounce of francium in the crust of the earth at any one time
Has the highest equivalent weight of any element
There are 33 known isotopes of francium

Common Uses of Francium
No known use

The Properties of the Element Francium
Name of Element : Francium
Symbol of Element : Fr
Atomic Number of Francium : 87
Atomic Mass: 223.0 amu
Melting Point: 27.0 °C - 300.15 °K
Boiling Point: 677.0 °C - 950.15 °K
Number of Protons/Electrons in Francium : 87
Number of Neutrons in Francium : 136
Crystal Structure: Cubic
Density @ 293 K
Color of Francium : Unknown