Arielle Pugh, Hour 6

Physical/Chemical Properties

Physical Properties:

· • No smell

· • The melting point of francium is 27 °C

· • The boiling point is 677 °C

· • Francium is the heaviest known member of the alkali metals series

· • It has the highest equivalent weight of any element

Chemical Properties:

· • Electronegativity (according to Pauling) is 0.7

· • Isotopes: 33

· • Reactive metal

· • Stored under kerosone to protect it from oxygen and water vapor reaction.

· • Reacts quickly with oxygen.

Francium is a very unstable property. It would most likely have a violent reaction with any other element during a chemical property, like an explosion, based on the reaction(s) its sister elements have had.

Electron Configuration


2s2 2p6

3s2 3p6 3d10

4s2 4p6 4d10 4f14

5s2 5p6 5d10

6s2 6p6


Alkali Metals- why dont use Francium in Lab Experiments


Basic Info:

Atomic Number: 87

Number of Protons: 87

Number of Electrons: 87


Discovered by Marguerite Perey in 1939

Francium is the second rarest element in the Earth's crust next to Astatine.

It is a heavy, unstable, radioactive metal.

Decays after 22 minutes and turns into Astatine, Radon, or Radium.

No stable isotopes.