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Francium vs Tungsten

Francium
Tungsten
Tungsten vs Francium


Periodic Table
Symbol
Fr  
W  
Group Number
1  
17
6  
12
Period Number
7  
6  
Block
s block  
d block  
Element Family
Alkali  
Transition Metal  
CAS Number
7440735  
18
7440337  
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.
  
  • Tungsten element has the second highest melting point.
  • Pure tungsten can easily cut down with the help of hacksaw.
  
Sources
Formed by Decay Process, Mining  
Earth's crust, Found in Minerals, Mining, Ores of Minerals  
History
  
  
Who Discovered
Marguerite Perey  
Not Available  
Discovery
In 1939  
In 1781  
Abundance
  
  
Abundance In Universe
Not Available  
5 * 10-8 %  
27
Abundance In Sun
~-9999 %  
~0.0000004 %  
23
Abundance In Meteorites
Not Available  
0.00 %  
39
Abundance In Earth's Crust
Not Available  
0.00 %  
39
Abundance In Oceans
Not Available  
0.00 %  
18
Uses
Uses & Benefits
  • Francium has no known uses as it has a half life of only 22 minutes.
  
  • Tungsten and its alloys are used in high-temperature applications like welding electrodes, high-temperature furnace, etc.
  • Tungsten carbide is very hard and used in metal working, mining and petroleum industry.
  
Industrial Uses
NA  
Aerospace Industry, Automobile Industry, Electrical Industry, Electronic Industry  
Medical Uses
NA  
NA  
Other Uses
NA  
Alloys  
Biological Properties
  
  
Toxicity
NA  
Non Toxic  
Present in Human Body
No  
Yes  
In Blood
0.00 Blood/mg dm-3  
37
0.00 Blood/mg dm-3  
31
In Bone
0.00 p.p.m.  
36
0.00 p.p.m.  
35
Physical Properties
Melting Point
27.00 °C  
99+
3,410.00 °C  
1
Boiling Point
677.00 °C  
99+
5,660.00 °C  
1
Appearance
  
  
Physical State
Solid  
Solid  
Color
NA  
Grayish White  
Luster
NA  
Lustrous  
Hardness
  
  
Mohs Hardness
Not Available  
7.50  
2
Brinell Hardness
Not Available  
2,000.00 MPa  
4
Vickers Hardness
Not Available  
3,430.00 MPa  
1
Speed of Sound
Not Available  
4,620.00 m/s  
16
Optical Properties
  
  
Reflectivity
Not Available  
62.00 %  
13
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  
W  
Isotopes
  
  
Known Isotopes
33  
6
33  
6
Electronegativity
  
  
Pauling Electronegativity
0.70  
99+
2.36  
2
Sanderson Electronegativity
Not Available  
0.98  
23
Allred Rochow Electronegativity
0.86  
99+
1.40  
19
Mulliken-Jaffe Electronegativity
0.68  
25
Not Available  
Allen Electronegativity
0.67  
99+
1.47  
29
Electropositivity
  
  
Pauling Electropositivity
3.30  
1
1.64  
99+
Ionization Energies
  
  
1st Energy Level
380.00 kJ/mol  
99+
770.00 kJ/mol  
16
2nd Energy Level
Not Available  
1,700.00 kJ/mol  
29
Electrochemical Equivalent
8.32 g/amp-hr  
1
1.14 g/amp-hr  
99+
Electron Work Function
Not Available  
4.55 eV  
13
Other Chemical Properties
Ionization, Radioactive Isotopes, Radioactivity, Solubility  
Ionization, Radioactive Isotopes, Solubility  
Atomic Properties
Atomic Number
87  
31
74  
99+
Electron Configuration
[Rn] 7s1  
[Xe] 4f14 5d4 6s2  
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
74  
99+
Number of Neutrons
136  
17
110  
27
Number of Electrons
87  
31
74  
99+
Radius of an Atom
  
  
Atomic Radius
Not Available  
139.00 pm  
39
Covalent Radius
260.00 pm  
1
162.00 pm  
29
Van der Waals Radius
348.00 pm  
1
200.00 pm  
28
Atomic Weight
223.00 amu  
27
183.84 amu  
37
Atomic Volume
Not Available  
9.53 cm3/mol  
99+
Adjacent Atomic Numbers
  
  
Previous Element
Polonium
  
Tantalum
  
Next Element
Radium
  
Rhenium
  
Valence Electron Potential
8.00 (-eV)  
99+
140.00 (-eV)  
5
Lattice Constant
Not Available  
316.52 pm  
99+
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+
19.25 g/cm3  
16
Density When Liquid (at m.p.)
Not Available  
17.60 g/cm3  
5
Tensile Strength
Not Available  
370.00 MPa  
10
Viscosity
Not Available  
Not Available  
Vapor Pressure
  
  
Vapor Pressure at 2000 K
Not Available  
0.00 (Pa)  
32
Elasticity properties
  
  
Shear Modulus
Not Available  
161.00 GPa  
5
Bulk Modulus
Not Available  
310.00 GPa  
4
Young's Modulus
Not Available  
411.00 GPa  
4
Poisson Ratio
Not Available  
0.28  
17
Other Mechanical Properties
NA  
Ductile, Malleable  
Magnetic Properties
Magnetic Characteristics
  
  
Specific Gravity
Not Available  
19.22  
9
Magnetic Ordering
Paramagnetic  
Paramagnetic  
Electrical Properties
  
  
Electrical Property
Poor Conductor  
Superconductor  
Resistivity
3.00 nΩ·m  
99+
52.80 nΩ·m  
99+
Electrical Conductivity
0.03 106/cm Ω  
40
0.19 106/cm Ω  
10
Electron Affinity
Not Available  
78.60 kJ/mol  
13
Thermal Properties
Specific Heat
Not Available  
0.13 J/(kg K)  
39
Molar Heat Capacity
Not Available  
24.27 J/mol·K  
99+
Thermal Conductivity
15.00 W/m·K  
99+
173.00 W/m·K  
7
Critical Temperature
Not Available  
Not Available  
Thermal Expansion
Not Available  
4.50 µm/(m·K)  
99+
Enthalpy
  
  
Enthalpy of Vaporization
Not Available  
799.10 kJ/mol  
1
Enthalpy of Fusion
Not Available  
35.23 kJ/mol  
1
Enthalpy of Atomization
71.00 kJ/mol  
99+
837.00 kJ/mol  
1
Standard Molar Entropy
Not Available  
32.60 J/mol.K  
99+
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