Symbol
Re
Tc
Group Number
77
0
17
👆🏻
Period Number
65
2
7
👆🏻
Block
d block
d block
Element Family
Transition Metal
Transition Metal
CAS Number
74401557440268
7429905
54386242
👆🏻
Space Group Name
P63/mmc
P63/mmc
Space Group Number
194.00194.00
11
276
👆🏻
Interesting Facts
- Chemical properties of Rhenium are similar to Manganese.
- Rhenium metal is created while refining Molybdenum.
- Original name of Technetium was Masurium.
- At the time of its discovery it found in sample of Molybdenum.
Sources
Found in Minerals, Mining, Ores of Minerals
Made by Bombarding Molybdenum with Deuterons
History
Who Discovered
Masataka Ogawa
Emilio Segrè and Carlo Perriero
Discovery
In 1908
In 1937
Abundance
Abundance In Universe
0.00 %0.00 %
0
0.11
👆🏻
Abundance In Sun
0.00 %0.00 %
0
0.1
👆🏻
Abundance In Meteorites
0.00 %-
0
22
👆🏻
Abundance In Earth's Crust
0.00 %0.00 %
1E-37
8.1
👆🏻
Abundance In Oceans
0.00 %-
0
1.1
👆🏻
Abundance In Humans
0.00 %-
0
1.4
👆🏻
Uses & Benefits
- 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.
- Technetium is a radioactive metal and hence it is used for medical studies and other research purposes.
Industrial Uses
Aerospace Industry, Automobile Industry, Chemical Industry, Electrical Industry, Electronic Industry
-
Medical Uses
-
-
Other Uses
Alloys
Alloys, Nuclear Research, Research Purposes
Biological Properties
Toxicity
Low Toxic
Low Toxic
Present in Human Body
✔
✘
✔
✘
In Blood
0.00 Blood/mg dm-30.00 Blood/mg dm-3
0
1970
👆🏻
In Bone
0.00 p.p.m.0.00 p.p.m.
0
170000
👆🏻
Melting Point
3,180.00 °C2,200.00 °C
-38.83
3410
👆🏻
Boiling Point
5,627.00 °C4,877.00 °C
0
5660
👆🏻
Appearance
Physical State
Solid
Solid
Color
Silvery Gray
Shiny Gray
Luster
Metallic
-
Hardness
Mohs Hardness
7.002.25
0.2
8.5
👆🏻
Brinell Hardness
1,320.00 MPa550.00 MPa
0.14
3490
👆🏻
Vickers Hardness
1,350.00 MPa500.00 MPa
0
3920
👆🏻
Speed of Sound
4,700.00 m/s16,200.00 m/s
818
16200
👆🏻
Optical Properties
Refractive Index
1.901.90
0.155
3.41
👆🏻
Reflectivity
70.00 %35.00 %
5
97
👆🏻
Allotropes
✔
✘
✔
✘
α Allotropes
-
-
β Allotropes
-
-
γ Allotropes
-
-
Chemical Formula
Re
Tc
Isotopes
Known Isotopes
3318
0
38
👆🏻
Electronegativity
Pauling Electronegativity
1.901.90
0
2.6
👆🏻
Sanderson Electronegativity
1.901.90
0.22
2.56
👆🏻
Allred Rochow Electronegativity
1.461.36
0.86
1.9
👆🏻
Mulliken-Jaffe Electronegativity
1.901.90
0.62
2.48
👆🏻
Allen Electronegativity
1.601.51
0.659
2.7
👆🏻
Electropositivity
Pauling Electropositivity
2.102.10
1.46
3.3
👆🏻
Ionization Energies
1st Energy Level
760.00 kJ/mol702.00 kJ/mol
375.7
26130
👆🏻
2nd Energy Level
1,260.00 kJ/mol1,470.00 kJ/mol
392.8
28750
👆🏻
3rd Energy Level
2,510.00 kJ/mol2,850.00 kJ/mol
392.8
34230
👆🏻
4th Energy Level
3,640.00 kJ/mol7,020.00 kJ/mol
375.7
37066
👆🏻
5th Energy Level
7,600.00 kJ/mol7,020.00 kJ/mol
392
97510
👆🏻
6th Energy Level
7,600.00 kJ/mol7,020.00 kJ/mol
1007
105800
👆🏻
7th Energy level
7,600.00 kJ/mol4,700.00 kJ/mol
1007
114300
👆🏻
8th Energy Level
5,560.00 kJ/mol4,700.00 kJ/mol
730
125300
👆🏻
9th Energy Level
5,560.00 kJ/mol7,020.00 kJ/mol
1007
134700
👆🏻
10th Energy Level
7,600.00 kJ/mol7,020.00 kJ/mol
392
144300
👆🏻
11th Energy Level
7,600.00 kJ/mol7,020.00 kJ/mol
392
169988
👆🏻
12th Energy Level
7,600.00 kJ/mol7,020.00 kJ/mol
0
189368
👆🏻
13th Energy Level
7,600.00 kJ/mol7,020.00 kJ/mol
1007
76015
👆🏻
14th Energy Level
7,600.00 kJ/mol7,020.00 kJ/mol
380
86450
👆🏻
15th Energy Level
76,000.00 kJ/mol70,200.00 kJ/mol
33000
100700
👆🏻
16th Energy Level
76,000.00 kJ/mol70,200.00 kJ/mol
375.7
109480
👆🏻
17th Energy Level
760.10 kJ/mol702.50 kJ/mol
375.7
122200
👆🏻
18th Energy Level
7,600.00 kJ/mol7,020.00 kJ/mol
0
134810
👆🏻
19th Energy Level
760.40 kJ/mol702.00 kJ/mol
375.7
148700
👆🏻
20th Energy Level
760.00 kJ/mol702.00 kJ/mol
0
171200
👆🏻
21st Energy Level
760.00 kJ/mol702.00 kJ/mol
375.7
179100
👆🏻
22nd Energy Level
760.00 kJ/mol702.00 kJ/mol
330
184900
👆🏻
23rd Energy Level
760.00 kJ/mol702.00 kJ/mol
357.6
198800
👆🏻
24th Energy Level
760.00 kJ/mol702.50 kJ/mol
297.3
195200
👆🏻
25th Energy Level
760.00 kJ/mol702.00 kJ/mol
0
121900
👆🏻
26th Energy Level
760.00 kJ/mol702.00 kJ/mol
357.6
127700
👆🏻
27th Energy Level
760.00 kJ/mol702.00 kJ/mol
0
133800
👆🏻
28th Energy Level
760.00 kJ/mol702.00 kJ/mol
297.3
139800
👆🏻
29th Energy Level
760.00 kJ/mol702.00 kJ/mol
0
148100
👆🏻
30th Energy Level
760.00 kJ/mol702.00 kJ/mol
0
154500
👆🏻
Electrochemical Equivalent
0.99 g/amp-hr0.52 g/amp-hr
0.16812
8.3209
👆🏻
Electron Work Function
4.96 eV4.90 eV
2.14
6
👆🏻
Other Chemical Properties
Corrosion, Ionization, Radioactive Isotopes, Solubility
Anti Corrosion, Ionization, Radioactive Isotopes, Radioactivity, Solubility
Atomic Number
7543
3
117
👆🏻
Electron Configuration
[Xe] 4f14 5d5 6s2
[Kr] 4d5 5s2
Crystal Structure
Hexagonal Close Packed (HCP)
Hexagonal Close Packed (HCP)
Crystal Lattice
Atom
Number of Protons
7543
3
117
👆🏻
Number of Neutrons
11155
4
285
👆🏻
Number of Electrons
7543
3
117
👆🏻
Radius of an Atom
Atomic Radius
137.00 pm136.00 pm
0
348
👆🏻
Covalent Radius
151.00 pm147.00 pm
0
260
👆🏻
Van der Waals Radius
200.00 pm200.00 pm
0
348
👆🏻
Atomic Weight
186.21 amu98.00 amu
6.94
294
👆🏻
Atomic Volume
8.85 cm3/mol8.50 cm3/mol
1.39
71.07
👆🏻
Adjacent Atomic Numbers
Previous Element
Next Element
Valence Electron Potential
180.00 (-eV)180.00 (-eV)
0
392.42
👆🏻
Lattice Constant
276.10 pm273.50 pm
0
891.25
👆🏻
Lattice Angles
π/2, π/2, 2 π/3
π/2, π/2, 2 π/3
Lattice C/A Ratio
1.621.60
0.423
1.9
👆🏻
Density
Density At Room Temperature
21.02 g/cm311.00 g/cm3
0.534
40.7
👆🏻
Density When Liquid (at m.p.)
18.90 g/cm311.00 g/cm3
0.512
41
👆🏻
Tensile Strength
1,070.00 MPa50.00 MPa
0.1
11000
👆🏻
Viscosity
0.000.00
1.5E-05
0.0035
👆🏻
Vapor Pressure
Vapor Pressure at 1000 K
0.00 (Pa)0.00 (Pa)
0
121
👆🏻
Vapor Pressure at 2000 K
0.00 (Pa)0.00 (Pa)
0
774
👆🏻
Elasticity properties
Shear Modulus
178.00 GPa27.00 GPa
1.3
222
👆🏻
Bulk Modulus
370.00 GPa100.00 GPa
0
462
👆🏻
Young's Modulus
463.00 GPa50.00 GPa
0
528
👆🏻
Poisson Ratio
0.300.38
0.032
0.47
👆🏻
Other Mechanical Properties
Ductile, Malleable
-
Magnetic Characteristics
Specific Gravity
21.0211.50
0.53
4500
👆🏻
Magnetic Ordering
Paramagnetic
Paramagnetic
Permeability
0.00 H/m0.00 H/m
1.25643E-06
0.0063
👆🏻
Susceptibility
0.000.00
-0.000166
200000
👆🏻
Electrical Properties
Electrical Property
Conductor
Conductor
Resistivity
193.00 nΩ·m200.00 nΩ·m
0.1
961
👆🏻
Electrical Conductivity
0.05 106/cm Ω0.07 106/cm Ω
0
0.63
👆🏻
Electron Affinity
14.50 kJ/mol53.00 kJ/mol
0
222.8
👆🏻
Specific Heat
0.13 J/(kg K)0.21 J/(kg K)
0.1
3.6
👆🏻
Molar Heat Capacity
25.48 J/mol·K24.27 J/mol·K
13.1
62.7
👆🏻
Thermal Conductivity
48.00 W/m·K50.60 W/m·K
0
429
👆🏻
Critical Temperature
3,459.00 K2,150.00 K
26.3
3695
👆🏻
Thermal Expansion
6.20 µm/(m·K)7.10 µm/(m·K)
4.5
97
👆🏻
Enthalpy
Enthalpy of Vaporization
707.10 kJ/mol660.00 kJ/mol
7.32
799.1
👆🏻
Enthalpy of Fusion
33.05 kJ/mol23.01 kJ/mol
2.1
35.23
👆🏻
Enthalpy of Atomization
791.00 kJ/mol649.00 kJ/mol
61.5
837
👆🏻
Standard Molar Entropy
36.90 J/mol.K181.10 J/mol.K
9.5
198.1
👆🏻