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Francium Rhenium Comparison

Francium
Rhenium
Rhenium Francium comparison


Periodic Table
Symbol
Fr  
Re  
Group Number
1  
17
7  
11
Period Number
7  
6  
Block
s block  
d block  
Element Family
Alkali  
Transition Metal  
CAS Number
7440735  
18
7440155  
99+
Space Group Name
-  
P63/mmc  
Space Group Number
225.00  
3
194.00  
7
Facts
Interesting Facts
  • 223 Francium has the longest half life at 21.8.
  • Francium metal is produced by alpha decay in 227Actinium 227.
  
  • Chemical properties of Rhenium are similar to Manganese.
  • Rhenium metal is created while refining Molybdenum.
  
Sources
Formed by Decay Process, Mining  
Found in Minerals, Mining, Ores of Minerals  
History
  
  
Who Discovered
Marguerite Perey  
Masataka Ogawa  
Discovery
In 1939  
In 1908  
Abundance
  
  
Abundance In Universe
0.00 %  
40
0.00 %  
30
Abundance In Sun
0.00 %  
30
0.00 %  
29
Abundance In Meteorites
0.00 %  
99+
0.00 %  
99+
Abundance In Earth's Crust
0.00 %  
99+
0.00 %  
99+
Abundance In Oceans
-  
0.00 %  
34
Abundance In Humans
0.00 %  
24
0.00 %  
24
Uses
Uses & Benefits
  • Francium has no known uses as it has a half life of only 22 minutes.
  
  • Alloys of Rhenium are used as an electric contact material. It can resist withstand arc corrosion.
  • Its catalysts are used in hydrogenation of fine chemicals. Its Alloy with nickel is used to produce turbine blades.
  
Industrial Uses
-  
Aerospace Industry, Automobile Industry, Chemical Industry, Electrical Industry, Electronic Industry  
Medical Uses
-  
-  
Other Uses
-  
Alloys  
Biological Properties
  
  
Toxicity
-  
Low Toxic  
Present in Human Body
No  
No  
In Blood
0.00 Blood/mg dm-3  
40
0.00 Blood/mg dm-3  
37
In Bone
0.00 p.p.m.  
99+
0.00 p.p.m.  
99+
Physical
Melting Point
27.00 °C  
99+
3,180.00 °C  
2
Boiling Point
677.00 °C  
99+
5,627.00 °C  
2
Appearance
  
  
Physical State
Solid  
Solid  
Color
-  
Silvery Gray  
Luster
-  
Metallic  
Hardness
  
  
Mohs Hardness
0.20  
27
7.00  
3
Brinell Hardness
119.00 MPa  
99+
1,320.00 MPa  
8
Vickers Hardness
300.00 MPa  
99+
1,350.00 MPa  
12
Speed of Sound
2,440.00 m/s  
99+
4,700.00 m/s  
19
Optical Properties
  
  
Refractive Index
1.70  
27
1.90  
18
Reflectivity
72.00 %  
11
70.00 %  
13
Allotropes
No  
No  
α Allotropes
-  
-  
β Allotropes
-  
-  
γ Allotropes
-  
-  
Chemical
Chemical Formula
Fr  
Re  
Isotopes
  
  
Known Isotopes
33  
6
33  
6
Electronegativity
  
  
Pauling Electronegativity
0.70  
99+
1.90  
12
Sanderson Electronegativity
0.70  
99+
1.90  
13
Allred Rochow Electronegativity
0.86  
99+
1.46  
16
Mulliken-Jaffe Electronegativity
0.68  
99+
1.90  
13
Allen Electronegativity
0.67  
99+
1.60  
24
Electropositivity
  
  
Pauling Electropositivity
3.30  
1
2.10  
99+
Ionization Energies
  
  
1st Energy Level
380.00 kJ/mol  
99+
760.00 kJ/mol  
20
2nd Energy Level
392.80 kJ/mol  
99+
1,260.00 kJ/mol  
99+
3rd Energy Level
392.80 kJ/mol  
99+
2,510.00 kJ/mol  
99+
4th Energy Level
392.80 kJ/mol  
99+
3,640.00 kJ/mol  
99+
5th Energy Level
392.00 kJ/mol  
99+
7,600.00 kJ/mol  
20
6th Energy Level
3,920.00 kJ/mol  
99+
7,600.00 kJ/mol  
37
7th Energy level
3,920.00 kJ/mol  
99+
7,600.00 kJ/mol  
31
8th Energy Level
3,920.00 kJ/mol  
99+
5,560.00 kJ/mol  
99+
9th Energy Level
3,920.00 kJ/mol  
99+
5,560.00 kJ/mol  
99+
10th Energy Level
392.00 kJ/mol  
99+
7,600.00 kJ/mol  
31
11th Energy Level
392.00 kJ/mol  
99+
7,600.00 kJ/mol  
30
12th Energy Level
38,000.00 kJ/mol  
23
7,600.00 kJ/mol  
99+
13th Energy Level
3,920.00 kJ/mol  
99+
7,600.00 kJ/mol  
23
14th Energy Level
380.00 kJ/mol  
99+
7,600.00 kJ/mol  
20
15th Energy Level
67,700.00 kJ/mol  
32
76,000.00 kJ/mol  
20
16th Energy Level
39,200.00 kJ/mol  
99+
76,000.00 kJ/mol  
15
17th Energy Level
392.00 kJ/mol  
99+
760.10 kJ/mol  
36
18th Energy Level
3,920.00 kJ/mol  
99+
7,600.00 kJ/mol  
26
19th Energy Level
392.80 kJ/mol  
99+
760.40 kJ/mol  
33
20th Energy Level
392.00 kJ/mol  
99+
760.00 kJ/mol  
27
21st Energy Level
392.00 kJ/mol  
99+
760.00 kJ/mol  
99+
22nd Energy Level
392.00 kJ/mol  
99+
760.00 kJ/mol  
21
23rd Energy Level
392.80 kJ/mol  
99+
760.00 kJ/mol  
99+
24th Energy Level
392.00 kJ/mol  
99+
760.00 kJ/mol  
18
25th Energy Level
392.00 kJ/mol  
99+
760.00 kJ/mol  
18
26th Energy Level
392.80 kJ/mol  
99+
760.00 kJ/mol  
18
27th Energy Level
392.00 kJ/mol  
99+
760.00 kJ/mol  
17
28th Energy Level
380.00 kJ/mol  
99+
760.00 kJ/mol  
23
29th Energy Level
392.00 kJ/mol  
99+
760.00 kJ/mol  
24
30th Energy Level
677.00 kJ/mol  
31
760.00 kJ/mol  
18
Electrochemical Equivalent
8.32 g/amp-hr  
1
0.99 g/amp-hr  
99+
Electron Work Function
4.07 eV  
33
4.96 eV  
11
Other Chemical Properties
Ionization, Radioactive Isotopes, Radioactivity, Solubility  
Corrosion, Ionization, Radioactive Isotopes, Solubility  
Atomic
Atomic Number
87  
31
75  
99+
Electron Configuration
[Rn] 7s1  
[Xe] 4f14 5d5 6s2  
Crystal Structure
Body Centered Cubic (BCC)  
Hexagonal Close Packed (HCP)  
Crystal Lattice
BCC-Crystal-Structure-.jpg#100  
BCC-Crystal-Structure-.jpg#100  
Atom
  
  
Number of Protons
87  
31
75  
40
Number of Neutrons
136  
18
111  
27
Number of Electrons
87  
31
75  
40
Radius of an Atom
  
  
Atomic Radius
348.00 pm  
1
137.00 pm  
99+
Covalent Radius
260.00 pm  
1
151.00 pm  
36
Van der Waals Radius
348.00 pm  
1
200.00 pm  
35
Atomic Weight
223.00 amu  
27
186.21 amu  
36
Atomic Volume
71.00 cm3/mol  
2
8.85 cm3/mol  
99+
Adjacent Atomic Numbers
  
  
Previous Element
Polonium
  
Tungsten
  
Next Element
Radium
  
Osmium
  
Valence Electron Potential
8.00 (-eV)  
99+
180.00 (-eV)  
3
Lattice Constant
440.00 pm  
21
276.10 pm  
99+
Lattice Angles
-  
π/2, π/2, 2 π/3  
Lattice C/A Ratio
1.56  
99+
1.62  
17
Mechanical
Density
  
  
Density At Room Temperature
1.87 g/cm3  
99+
21.02 g/cm3  
12
Density When Liquid (at m.p.)
1.87 g/cm3  
99+
18.90 g/cm3  
14
Tensile Strength
50.00 MPa  
38
1,070.00 MPa  
3
Viscosity
0.00  
25
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)  
24
0.00 (Pa)  
40
Elasticity properties
  
  
Shear Modulus
3.60 GPa  
99+
178.00 GPa  
3
Bulk Modulus
6.00 GPa  
99+
370.00 GPa  
2
Young's Modulus
0.00 GPa  
99+
463.00 GPa  
2
Poisson Ratio
0.44  
3
0.30  
14
Other Mechanical Properties
-  
Ductile, Malleable  
Magnetic
Magnetic Characteristics
  
  
Specific Gravity
0.87  
99+
21.02  
14
Magnetic Ordering
Paramagnetic  
Paramagnetic  
Permeability
0.00 H/m  
13
0.00 H/m  
8
Susceptibility
0.00  
24
0.00  
26
Electrical Properties
  
  
Electrical Property
Poor Conductor  
Conductor  
Resistivity
3.00 nΩ·m  
99+
193.00 nΩ·m  
20
Electrical Conductivity
0.03 106/cm Ω  
99+
0.05 106/cm Ω  
38
Electron Affinity
0.70 kJ/mol  
99+
14.50 kJ/mol  
99+
Thermal
Specific Heat
0.15 J/(kg K)  
37
0.13 J/(kg K)  
40
Molar Heat Capacity
27.00 J/mol·K  
29
25.48 J/mol·K  
99+
Thermal Conductivity
15.00 W/m·K  
99+
48.00 W/m·K  
31
Critical Temperature
300.00 K  
99+
3,459.00 K  
2
Thermal Expansion
18.90 µm/(m·K)  
25
6.20 µm/(m·K)  
99+
Enthalpy
  
  
Enthalpy of Vaporization
67.00 kJ/mol  
99+
707.10 kJ/mol  
4
Enthalpy of Fusion
2.30 kJ/mol  
99+
33.05 kJ/mol  
2
Enthalpy of Atomization
71.00 kJ/mol  
99+
791.00 kJ/mol  
2
Standard Molar Entropy
42.00 J/mol.K  
99+
36.90 J/mol.K  
99+
Summary >>
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