Francium was discovered by Marguerite Perey in 1939.
Francium was discovered by Marguerite Perey in 1939.
The most metallic element on the planet is Francium. It is the last element to be discovered that was not made synthetically.
Francium (Atomic Number 87), the Last Discovered Natural Element
Marguerite Perey, 1939
Radon (element #86) was discovered in 1900. Francium (#87) was discovered in 1939. Francium is the second rarest naturally occurring element. It is also one of the most reactive elements known to man and has a high isotopic instability, with a half life of about 22 minutes. Francium is a part of the Alkali metals group, which are all quite reactive with water and air, Francium being the most reactive. Francium will react explosively upon contact with air, and you wouldn't want to be there if it came into contact with water.
Francium was discovered by Marguerite Perey (from France) in 1939 during a study on actinium-227: she observed an energy level possibly attributable to a new element. After some chemical experiments she was sure that the radiation is from a new chemical element, after this called francium.
Francium was discovered, see the link.
Francium was discovered by Marguerite Perey in 1939 during a study on actinium-227: she observed an energy level possibly attributable to a new element. After some chemical experiments she was sure that the radiation is from a new chemical element, after this called francium.
Francium was discovered by Marguerite Perey in 1939 during a study on actinium-227: she observed an energy level possibly attributable to a new element. After some chemical experiments she was sure that the radiation is from a new chemical element, after this called francium.
Francium was discovered by Marguerite Perey in 1939 during a study on actinium-227: she observed an energy level possibly attributable to a new element. After some chemical experiments she was sure that the radiation is from a new chemical element, after this called francium.
The element is francium.
Francium is a GROUP 1 metallic ELEMENT. It is a the bottom of Group 1 . Its partner elements in the Group are, lithium, sodium, potassium, rubidium, & caesium. They all react with water with increasing violence. to the point of explositivity. Francium is also Radio-Active, so you will not find it in any school lab. or even industrial labs. It is probably kept in a very special nuclear research lab. under very controlled conditions. It was discovered by Marie Curie, in France, hence its name.