Shan+Francium

 **Francium __ Fact of Fib ? __** =1256529574Francium is the third rarest element in the crust, after astatine? Its the first rarest 1256529574 ** Name of Element : Francium Symbol of Element : Fr Atomic Number of Francium  : 87 Atomic Mass: 223.0 amu Melting Point: 27.0 °C - 300.15 °K Boiling Point: 677.0 °C - 950.15 °K Number of Protons/Electrons in Francium : 87 Number of Neutrons in Francium : 136 Crystal Structure: Cubic Density @ 293 K Color of Francium : Unknown** =

**__Melting Point 27__**
 * Atomic number 87 **
 * R**

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