Francium

Statistics:

• Name: Francium
• Symbol: Fr
• Classification: Alkali Metals
• Atomic Number: 87
• Atomic Mass: 223.0197 g/mol
• Density: unknown
• Melting: 27°C
• Boiling: 677°C
• Protons & Electrons:87
• Neutrons:136
• Discovered: 1939
• Discovered By: Perey
• Sponsored By: Your Ad Here

Electrons Per Energy Level:

• Level 1: 2
• Level 2: 8
• Level 3: 18
• Level 4: 32
• Level 5: 18
• Level 6: 8
• Level 7: 1

Isotopes:

Isotope: Half-life

• ²¹²Fr: 20.0 minutes
• ²²¹Fr: 4.9 minutes
• ²²²Fr: 14.2 minutes
• ²²³Fr: 21.8 minutes

Brief Summary

Francium is a Alkali Metals with the symbol 'Fr' and contains 87 Protons & Electrons with 136 neutrons in the nucleus of the atom. Francium has an atomic mass of 223.0197 g/mol . It will melt at a temperature of 27°C and boil at 677°C.

Francium was discovered by Perey in 1939 and is named 'Francium' After France.

Some common usages for Francium: currently unknown.

Definitions and Notes

Density listed is at a temperature of 20°C.

Isotopes are forms of an element who have the same atomic number but different mass because they contain different number of neutrons.

Half-life is the time required for a quantity of a subject to fall to half of its current quantity.

MLA Citing Format

Francium :: Fr :: 87 - Chemical Element. 22 Nov. 2008 <http://www.chemicalelement.com/element/francium.html>.