Home
 Compare Metals

Francium vs Sodium

Francium
Sodium
Sodium vs Francium


Periodic Table
Symbol
Fr  
Na  
Group Number
1  
17
1  
17
Period Number
7  
3  
Block
s block  
s block  
Element Family
Alkali  
Alkali  
CAS Number
7440735  
18
7440235  
99+
Space Group Name
Not Available  
Im_ 3m  
Space Group Number
Not Available  
229.00  
1
Facts
Interesting Facts
  • 223 Francium has the longest half life at 21.8.
  • Francium metal is produced by alpha decay in 227Actinium 227.
  
  • At room temperature Sodium metal is very soft as it can be chopped down into pieces with butter knife.
  • The most common compound of Sodium is NaCl (Salt).
  
Sources
Formed by Decay Process, Mining  
By Electrolysis Process, Mining  
History
  
  
Who Discovered
Marguerite Perey  
Humphry Davy  
Discovery
In 1939  
In 1807  
Abundance
  
  
Abundance In Universe
Not Available  
2 * 10-3 %  
6
Abundance In Sun
~-9999 %  
~0.004 %  
6
Abundance In Meteorites
Not Available  
0.55 %  
6
Abundance In Earth's Crust
Not Available  
2.30 %  
5
Abundance In Oceans
Not Available  
1.10 %  
1
Abundance In Humans
Not Available  
0.14 %  
3
Uses
Uses & Benefits
  • Francium has no known uses as it has a half life of only 22 minutes.
  
  • In some nuclear reactors sodium is used as a heat exchanger.
  • Compound of Sodium metals called Salt (Sodium chloride) is used in Food.
  
Industrial Uses
NA  
Electrical Industry, Electronic Industry  
Medical Uses
NA  
Pharmaceutical Industry  
Other Uses
NA  
Alloys  
Biological Properties
  
  
Toxicity
NA  
Toxic  
Present in Human Body
No  
Yes  
In Blood
0.00 Blood/mg dm-3  
37
1,970.00 Blood/mg dm-3  
1
In Bone
0.00 p.p.m.  
36
10,000.00 p.p.m.  
2
Physical Properties
Melting Point
27.00 °C  
99+
97.72 °C  
99+
Boiling Point
677.00 °C  
99+
883.00 °C  
99+
Appearance
  
  
Physical State
Solid  
Solid  
Color
NA  
Silvery White  
Luster
NA  
Metallic  
Hardness
  
  
Mohs Hardness
Not Available  
0.50  
22
Brinell Hardness
Not Available  
0.69 MPa  
99+
Speed of Sound
Not Available  
3,200.00 m/s  
24
Optical Properties
  
  
Allotropes
No  
No  
α Allotropes
Not Available  
Not Available  
β Allotropes
Not Available  
Not Available  
γ Allotropes
Not Available  
Not Available  
Chemical Properties
Chemical Formula
Fr  
Na  
Isotopes
  
  
Known Isotopes
33  
6
17  
22
Electronegativity
  
  
Pauling Electronegativity
0.70  
99+
0.93  
99+
Sanderson Electronegativity
Not Available  
0.56  
30
Allred Rochow Electronegativity
0.86  
99+
1.01  
35
Mulliken-Jaffe Electronegativity
0.68  
25
0.91  
21
Allen Electronegativity
0.67  
99+
0.87  
99+
Electropositivity
  
  
Pauling Electropositivity
3.30  
1
3.07  
6
Ionization Energies
  
  
1st Energy Level
380.00 kJ/mol  
99+
495.80 kJ/mol  
99+
2nd Energy Level
Not Available  
4,562.00 kJ/mol  
4
3rd Energy Level
Not Available  
6,910.30 kJ/mol  
6
4th Energy Level
Not Available  
9,543.00 kJ/mol  
5
5th Energy Level
Not Available  
13,354.00 kJ/mol  
4
6th Energy Level
Not Available  
16,613.00 kJ/mol  
4
7th Energy level
Not Available  
20,117.00 kJ/mol  
4
8th Energy Level
Not Available  
25,496.00 kJ/mol  
4
9th Energy Level
Not Available  
28,932.00 kJ/mol  
4
10th Energy Level
Not Available  
141,362.00 kJ/mol  
2
11th Energy Level
Not Available  
159,076.00 kJ/mol  
2
Electrochemical Equivalent
8.32 g/amp-hr  
1
0.86 g/amp-hr  
99+
Electron Work Function
Not Available  
2.75 eV  
40
Other Chemical Properties
Ionization, Radioactive Isotopes, Radioactivity, Solubility  
Chemical Stability, Corrosion, Flammability, Ionization, Solubility  
Atomic Properties
Atomic Number
87  
31
11  
99+
Electron Configuration
[Rn] 7s1  
[Ne] 3s1  
Crystal Structure
Body Centered Cubic (BCC)  
Body Centered Cubic (BCC)  
Crystal Lattice
BCC-Crystal-Structure-.jpg#100  
BCC-Crystal-Structure-.jpg#100  
Atom
  
  
Number of Protons
87  
31
11  
99+
Number of Neutrons
136  
17
12  
99+
Number of Electrons
87  
31
11  
99+
Radius of an Atom
  
  
Atomic Radius
Not Available  
186.00 pm  
9
Covalent Radius
260.00 pm  
1
166.00 pm  
27
Van der Waals Radius
348.00 pm  
1
227.00 pm  
21
Atomic Weight
223.00 amu  
27
22.99 amu  
99+
Atomic Volume
Not Available  
23.70 cm3/mol  
10
Adjacent Atomic Numbers
  
  
Previous Element
Polonium
  
Beryllium
  
Next Element
Radium
  
Magnesium
  
Valence Electron Potential
8.00 (-eV)  
99+
14.10 (-eV)  
99+
Lattice Constant
Not Available  
429.06 pm  
19
Lattice Angles
NA  
π/2, π/2, π/2  
Lattice C/A Ratio
Not Available  
Not Available  
Mechanical Properties
Density
  
  
Density At Room Temperature
1.87 g/cm3  
99+
0.97 g/cm3  
99+
Density When Liquid (at m.p.)
Not Available  
0.93 g/cm3  
99+
Tensile Strength
Not Available  
Not Available  
Viscosity
Not Available  
Not Available  
Vapor Pressure
  
  
Elasticity properties
  
  
Shear Modulus
Not Available  
3.30 GPa  
99+
Bulk Modulus
Not Available  
6.30 GPa  
99+
Young's Modulus
Not Available  
10.00 GPa  
99+
Poisson Ratio
Not Available  
Not Available  
Other Mechanical Properties
NA  
NA  
Magnetic Properties
Magnetic Characteristics
  
  
Specific Gravity
Not Available  
0.97  
99+
Magnetic Ordering
Paramagnetic  
Paramagnetic  
Electrical Properties
  
  
Electrical Property
Poor Conductor  
Conductor  
Resistivity
3.00 nΩ·m  
99+
47.70 nΩ·m  
99+
Electrical Conductivity
0.03 106/cm Ω  
40
0.21 106/cm Ω  
9
Electron Affinity
Not Available  
52.80 kJ/mol  
19
Thermal Properties
Specific Heat
Not Available  
1.23 J/(kg K)  
3
Molar Heat Capacity
Not Available  
28.23 J/mol·K  
10
Thermal Conductivity
15.00 W/m·K  
99+
142.00 W/m·K  
11
Critical Temperature
Not Available  
2,573.00 K  
2
Thermal Expansion
Not Available  
71.00 µm/(m·K)  
4
Enthalpy
  
  
Enthalpy of Vaporization
Not Available  
89.04 kJ/mol  
99+
Enthalpy of Fusion
Not Available  
2.59 kJ/mol  
99+
Enthalpy of Atomization
71.00 kJ/mol  
99+
108.40 kJ/mol  
99+
Standard Molar Entropy
Not Available  
51.30 J/mol.K  
28
Periodic Table >>
<< All

Compare All Metals

All Metals

All Metals

Compare All Metals

Home | About | Contact | Disclaimer | Terms of use
© A softusvista inc. venture!