Francium is a chemical element; it has symbol Fr and atomic number 87. It is extremely radioactive; its most stable isotope, francium-223 (originally...

Ununennium, also known as eka-francium or element 119, is a hypothetical chemical element; it has symbol Uue and atomic number 119. Ununennium and Uue...

Francium (87Fr) has no stable isotopes. A standard atomic weight cannot be given. Its most stable isotope is 223Fr with a half-life of 22 minutes, occurring...

Francium hydroxide is a hypothetical inorganic compound with a chemical formula FrOH. It is a hydroxide of francium. It probably can be produced by reacting...

Francium compounds are compounds containing the element francium (Fr). Due to francium being very unstable, its salts are only known to a small extent...

however, no refinements have been made for francium as no experiment has been conducted. However, francium is expected and, to a small extent, observed...

Francium chloride is a radioactive chemical compound with the formula FrCl. It is a salt predicted to be a white solid and is soluble in water. Its properties...

lithium (Li), sodium (Na), potassium (K), rubidium (Rb), caesium (Cs), and francium (Fr). Together with hydrogen they constitute group 1, which lies in the...

(number) one of the years 87 BC, AD 87, 1987, 2087, etc. Atomic number 87, francium Intel 8087, a floating-point coprocessor 87; Common gasoline rating 87...

physicist and a student of Marie Curie. In 1939, Perey discovered the element francium by purifying samples of lanthanum that contained actinium. In 1962, she...