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Tungsten vs Francium

Tungsten
Francium
Francium vs Tungsten


Periodic Table
Symbol
W  
Fr  
Group Number
6  
12
1  
17
Period Number
6  
7  
Block
d block  
s block  
Element Family
Transition Metal  
Alkali  
CAS Number
7440337  
99+
7440735  
18
Space Group Name
Im_ 3m  
-  
Space Group Number
229.00  
2
225.00  
3
Facts
Interesting Facts
  • Tungsten element has the second highest melting point.
  • Pure tungsten can easily cut down with the help of hacksaw.
  
  • 223 Francium has the longest half life at 21.8.
  • Francium metal is produced by alpha decay in 227Actinium 227.
  
Sources
Earth's crust, Found in Minerals, Mining, Ores of Minerals  
Formed by Decay Process, Mining  
History
  
  
Who Discovered
-  
Marguerite Perey  
Discovery
In 1781  
In 1939  
Abundance
  
  
Abundance In Universe
0.00 %  
28
0.00 %  
40
Abundance In Sun
0.00 %  
23
0.00 %  
30
Abundance In Meteorites
0.00 %  
39
0.00 %  
99+
Abundance In Earth's Crust
0.00 %  
39
0.00 %  
99+
Abundance In Oceans
0.00 %  
18
-  
Abundance In Humans
0.00 %  
24
0.00 %  
24
Uses
Uses & Benefits
  • 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.
  
  • Francium has no known uses as it has a half life of only 22 minutes.
  
Industrial Uses
Aerospace Industry, Automobile Industry, Electrical Industry, Electronic Industry  
-  
Medical Uses
-  
-  
Other Uses
Alloys  
-  
Biological Properties
  
  
Toxicity
Non Toxic  
-  
Present in Human Body
Yes  
No  
In Blood
0.00 Blood/mg dm-3  
31
0.00 Blood/mg dm-3  
40
In Bone
0.00 p.p.m.  
40
0.00 p.p.m.  
99+
Physical
Melting Point
3,410.00 °C  
1
27.00 °C  
99+
Boiling Point
5,660.00 °C  
1
677.00 °C  
99+
Appearance
  
  
Physical State
Solid  
Solid  
Color
Grayish White  
-  
Luster
Lustrous  
-  
Hardness
  
  
Mohs Hardness
7.50  
2
0.20  
27
Brinell Hardness
2,000.00 MPa  
4
119.00 MPa  
99+
Vickers Hardness
3,430.00 MPa  
3
300.00 MPa  
99+
Speed of Sound
4,620.00 m/s  
20
2,440.00 m/s  
99+
Optical Properties
  
  
Refractive Index
2.10  
11
1.70  
27
Reflectivity
62.00 %  
21
72.00 %  
11
Allotropes
No  
No  
α Allotropes
-  
-  
β Allotropes
-  
-  
γ Allotropes
-  
-  
Chemical
Chemical Formula
W  
Fr  
Isotopes
  
  
Known Isotopes
33  
6
33  
6
Electronegativity
  
  
Pauling Electronegativity
2.36  
3
0.70  
99+
Sanderson Electronegativity
0.98  
99+
0.70  
99+
Allred Rochow Electronegativity
1.40  
20
0.86  
99+
Mulliken-Jaffe Electronegativity
2.36  
3
0.68  
99+
Allen Electronegativity
1.47  
33
0.67  
99+
Electropositivity
  
  
Pauling Electropositivity
1.64  
99+
3.30  
1
Ionization Energies
  
  
1st Energy Level
770.00 kJ/mol  
16
380.00 kJ/mol  
99+
2nd Energy Level
1,700.00 kJ/mol  
30
392.80 kJ/mol  
99+
3rd Energy Level
2,045.40 kJ/mol  
99+
392.80 kJ/mol  
99+
4th Energy Level
7,700.00 kJ/mol  
8
392.80 kJ/mol  
99+
5th Energy Level
7,700.00 kJ/mol  
17
392.00 kJ/mol  
99+
6th Energy Level
7,700.00 kJ/mol  
35
3,920.00 kJ/mol  
99+
7th Energy level
7,700.00 kJ/mol  
29
3,920.00 kJ/mol  
99+
8th Energy Level
7,700.00 kJ/mol  
29
3,920.00 kJ/mol  
99+
9th Energy Level
7,700.00 kJ/mol  
25
3,920.00 kJ/mol  
99+
10th Energy Level
7,700.00 kJ/mol  
29
392.00 kJ/mol  
99+
11th Energy Level
7,700.00 kJ/mol  
28
392.00 kJ/mol  
99+
12th Energy Level
7,700.00 kJ/mol  
99+
38,000.00 kJ/mol  
23
13th Energy Level
7,700.00 kJ/mol  
21
3,920.00 kJ/mol  
99+
14th Energy Level
770.00 kJ/mol  
99+
380.00 kJ/mol  
99+
15th Energy Level
77,000.00 kJ/mol  
18
67,700.00 kJ/mol  
32
16th Energy Level
77,000.00 kJ/mol  
13
39,200.00 kJ/mol  
99+
17th Energy Level
770.00 kJ/mol  
34
392.00 kJ/mol  
99+
18th Energy Level
7,700.00 kJ/mol  
24
3,920.00 kJ/mol  
99+
19th Energy Level
770.00 kJ/mol  
31
392.80 kJ/mol  
99+
20th Energy Level
770.00 kJ/mol  
25
392.00 kJ/mol  
99+
21st Energy Level
770.00 kJ/mol  
99+
392.00 kJ/mol  
99+
22nd Energy Level
770.00 kJ/mol  
19
392.00 kJ/mol  
99+
23rd Energy Level
770.00 kJ/mol  
99+
392.80 kJ/mol  
99+
24th Energy Level
770.00 kJ/mol  
15
392.00 kJ/mol  
99+
25th Energy Level
770.00 kJ/mol  
14
392.00 kJ/mol  
99+
26th Energy Level
770.00 kJ/mol  
14
392.80 kJ/mol  
99+
27th Energy Level
770.00 kJ/mol  
13
392.00 kJ/mol  
99+
28th Energy Level
770.00 kJ/mol  
19
380.00 kJ/mol  
99+
29th Energy Level
770.00 kJ/mol  
19
392.00 kJ/mol  
99+
30th Energy Level
770.00 kJ/mol  
14
677.00 kJ/mol  
31
Electrochemical Equivalent
1.14 g/amp-hr  
99+
8.32 g/amp-hr  
1
Electron Work Function
4.55 eV  
18
4.07 eV  
33
Other Chemical Properties
Ionization, Radioactive Isotopes, Solubility  
Ionization, Radioactive Isotopes, Radioactivity, Solubility  
Atomic
Atomic Number
74  
99+
87  
31
Electron Configuration
[Xe] 4f14 5d4 6s2  
[Rn] 7s1  
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
74  
99+
87  
31
Number of Neutrons
110  
28
136  
18
Number of Electrons
74  
99+
87  
31
Radius of an Atom
  
  
Atomic Radius
139.00 pm  
99+
348.00 pm  
1
Covalent Radius
162.00 pm  
31
260.00 pm  
1
Van der Waals Radius
200.00 pm  
35
348.00 pm  
1
Atomic Weight
183.84 amu  
37
223.00 amu  
27
Atomic Volume
9.53 cm3/mol  
99+
71.00 cm3/mol  
2
Adjacent Atomic Numbers
  
  
Previous Element
Tantalum
  
Polonium
  
Next Element
Rhenium
  
Radium
  
Valence Electron Potential
140.00 (-eV)  
5
8.00 (-eV)  
99+
Lattice Constant
316.52 pm  
99+
440.00 pm  
21
Lattice Angles
π/2, π/2, π/2  
-  
Lattice C/A Ratio
1.29  
99+
1.56  
99+
Mechanical
Density
  
  
Density At Room Temperature
19.25 g/cm3  
16
1.87 g/cm3  
99+
Density When Liquid (at m.p.)
17.60 g/cm3  
15
1.87 g/cm3  
99+
Tensile Strength
370.00 MPa  
11
50.00 MPa  
38
Viscosity
0.00  
1
0.00  
25
Vapor Pressure
  
  
Vapor Pressure at 1000 K
0.00 (Pa)  
37
0.00 (Pa)  
37
Vapor Pressure at 2000 K
0.00 (Pa)  
99+
0.00 (Pa)  
24
Elasticity properties
  
  
Shear Modulus
161.00 GPa  
5
3.60 GPa  
99+
Bulk Modulus
310.00 GPa  
4
6.00 GPa  
99+
Young's Modulus
411.00 GPa  
4
0.00 GPa  
99+
Poisson Ratio
0.28  
17
0.44  
3
Other Mechanical Properties
Ductile, Malleable  
-  
Magnetic
Magnetic Characteristics
  
  
Specific Gravity
19.22  
18
0.87  
99+
Magnetic Ordering
Paramagnetic  
Paramagnetic  
Permeability
0.00 H/m  
17
0.00 H/m  
13
Susceptibility
0.00  
23
0.00  
24
Electrical Properties
  
  
Electrical Property
Superconductor  
Poor Conductor  
Resistivity
52.80 nΩ·m  
99+
3.00 nΩ·m  
99+
Electrical Conductivity
0.19 106/cm Ω  
10
0.03 106/cm Ω  
99+
Electron Affinity
78.60 kJ/mol  
15
0.70 kJ/mol  
99+
Thermal
Specific Heat
0.13 J/(kg K)  
40
0.15 J/(kg K)  
37
Molar Heat Capacity
24.27 J/mol·K  
99+
27.00 J/mol·K  
29
Thermal Conductivity
173.00 W/m·K  
7
15.00 W/m·K  
99+
Critical Temperature
3,695.00 K  
1
300.00 K  
99+
Thermal Expansion
4.50 µm/(m·K)  
99+
18.90 µm/(m·K)  
25
Enthalpy
  
  
Enthalpy of Vaporization
799.10 kJ/mol  
1
67.00 kJ/mol  
99+
Enthalpy of Fusion
35.23 kJ/mol  
1
2.30 kJ/mol  
99+
Enthalpy of Atomization
837.00 kJ/mol  
1
71.00 kJ/mol  
99+
Standard Molar Entropy
32.60 J/mol.K  
99+
42.00 J/mol.K  
99+
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