Atomic Number of Francium Francium is a chemical element with atomic number 87 which means there are 87 protons and 87 electrons in the atomic structure. The chemical symbol for Francium is Fr. Atomic Mass of Francium. (The atomic number decreases by 2) If the radioelement emits Beta particles, the resulting elements must be placed one period to the right. (The atomic number increases by 1) The element that was two periods to the right of Francium is Actinium and the element on the left-hand side of Francium is Radon.
Francium was discovered by Marguerite Catherine Perey, a French chemist, in 1939 while analyzing actinium's decay sequence.
Name: FranciumSymbol: Fr/GettyImages-517345224-e456b6c739d64be89a519da75bb63e06.jpg "Atomic")
Atomic number: 87Atomic weight: 223.02State:solidGroup, period, block: 1, 7, sColor: metallicClassification: alkali metalWhat Is Francium Atomic Number
Electron configuration: 7s12,8,18,32,18,8,1
Physical properties
Density: 1.87 g/cm-3Melting point: 300 K,27 °C,80 °FBoiling point: 950 K,677 °C,1250 °F
Atomic properties
Oxidation states: 1Electronegativity: 0.7 (Pauling scale)Ionization energies: 1st: 380 kJ·mol-1Covalent radius: 260 pmVan der Waals radius: 348 pm
How Many Protons Are In Francium
Electron Configuration
Isotopes
Francium Periodic Table Atomic Number
Francium has no stable . Its most stable isotope is 223Fr with a half-life of 22 minutes.