Place-holder, no picture available of Francium
  

  Atomic No. Order:
next element

 Alphabetic Order:
previous element

Periodic Table

Ground State Electron Configuration of Francium

� 2, 8, 18, 32,��

�18, 8, 1��

H
1
Li
3
Na
11
K
19
Rb
37
Cs
55
Fr
�87
Uue
119
Uhe
169
Bue
219

Francium

SymbolFr
alkali metal
Atomic Number87
Relative Atomic Mass
12C = 12.0000
[ 223 ] Francium weights Herman H. Rosenfeld
223.0197
22.0(1) min.
Significant Atomic Mass224
Neutrons�
137
Atomic Radius� pmca. 270  Francium atomic radii Herman H. Rosenfeld  < 291 >
First Ionisation Energy
kJ mol -1
400  < 341 >
Ionization energy (eV)4,7270
Electronegativity0.7 < 0.75 >
Density���kg m -3< 2461 >
Molar Volume�� cm 3< 84.83 cm 3/mol>
Thermal Conductivity
W m -1 K -1
15 [300 K] (est.) < 22.9 >
Melting Point�� K300  < 301 >
Boiling Point� K950  < 945.6 >
Number of Isotopes30
Inner/outer Shells
� 4��+� 3���=7
Inner/outer Orbitals
� 60��+� 27���=�87
Filling Orbital
� 7s 1 
Ground State Electron
Configuration
[Rn] 5d 10 6p 6 7s 1

Ground State Electron
Configuration with
free Orbital �(n= 31)

� 0, 0, 0, 0, 14, 10, 7 �

Ground State Electron Configuration with free Orbitals of Francium

Ground State Electron
Configuration with
compr. Orbitals�(n= 162)

�0, 0, 0, 0, 18, 54, 90 �

Ground State Electron Configuration with compressed Orbitals of Francium

Singularity
280=�60+27+31+162

s

p

d

�f

g

h

i

j

12
226
32610
4261014
526101418
62610141822
7

1

1

61014182226
8
Term Symbol2S 1/2
DiscoveryDiscovered by M. Perey (Paris, France) in 1939
Name Derived FromNamed after France
 

line

APSIDIUM�  Created:����

2002-08-13

�� This page as PDF-file
087.pdf

Top Home

�Page�update:�

2007-05-21

��� �

<  > prediction of  Herman Rosenfeld