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Technetium
Technetium

Osmium
Osmium



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Technetium vs Osmium

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1 Periodic Table
1.1 Symbol
Tc
Os
1.2 Group Number
Tennessine
7
Rank: 11 (Overall)
8
Rank: 10 (Overall)
Gadolinium
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1.3 Period Number
Uranium
5
Rank: 3 (Overall)
6
Rank: 2 (Overall)
Lithium
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1.4 Block
d block
d block
1.5 Element Family
Transition Metal
Transition Metal
1.6 CAS Number
Roentgenium
7440268
Rank: 54 (Overall)
7440042
Rank: 75 (Overall)
Aluminium
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1.7 Space Group Name
P63/mmc
P63/mmc
1.8 Space Group Number
Sodium
194.00
Rank: 5 (Overall)
194.00
Rank: 5 (Overall)
Plutonium
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2 Facts
2.1 Interesting Facts
  • Original name of Technetium was Masurium.
  • At the time of its discovery it found in sample of Molybdenum.
  • Osmium metal does not oxidize in air unless it is heated.
  • But if it heated den it forms Osmium Tetroxide, which is highly toxic.
2.2 Sources
Made by Bombarding Molybdenum with Deuterons
Found As a By-product, Found in Minerals, Mining
2.3 History
2.3.1 Who Discovered
Emilio Segrè and Carlo Perriero
Smithson Tennant
2.3.2 Discovery
In 1937
In 1803
2.4 Abundance
2.4.1 Abundance In Universe
Iron
Not Available
Rank: N/A (Overall)
3 * 10-7 %
Rank: 21 (Overall)
Thallium
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2.4.2 Abundance In Sun
Iron
~-9999 %
Rank: N/A (Overall)
~0.0000002 %
Rank: 25 (Overall)
Beryllium
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2.4.3 Abundance In Meteorites
Iron
Not Available
Rank: N/A (Overall)
0.00 %
Rank: 28 (Overall)
Gold
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2.4.4 Abundance In Earth's Crust
Aluminium
Not Available
Rank: N/A (Overall)
0.00 %
Rank: 53 (Overall)
Radium
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2.4.5 Abundance In Oceans
Sodium
Not Available
Rank: N/A (Overall)
Not Available
Rank: N/A (Overall)
Protactinium
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2.4.6 Abundance In Humans
Calcium
Not Available
Rank: N/A (Overall)
Not Available
Rank: N/A (Overall)
Radium
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3 Uses
3.1 Uses & Benefits
  • Technetium is a radioactive metal and hence it is used for medical studies and other research purposes.
  • Its has very limited uses and its alloys are very hard and are used in the manufacturing of pen tips, pivots, needles and electrical contacts.
  • It is also used as industrial catalyst to speed up the chemical reaction.
3.1.1 Industrial Uses
NA
Aerospace Industry, Automobile Industry, Electrical Industry, Electronic Industry
3.1.2 Medical Uses
NA
NA
3.1.3 Other Uses
Alloys, Nuclear Research, Research Purposes
Alloys
3.2 Biological Properties
3.2.1 Toxicity
Low Toxic
Highly Toxic
3.2.2 Present in Human Body
60% Transition Metals Metals have it !
60% Transition Metals Metals have it !
3.2.3 In Blood
Sodium
0.00 Blood/mg dm-3
Rank: 37 (Overall)
Not Available
Rank: N/A (Overall)
Plutonium
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3.2.4 In Bone
Calcium
0.00 p.p.m.
Rank: 36 (Overall)
Not Available
Rank: N/A (Overall)
Plutonium
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4 Physical
4.1 Melting Point
Tungsten
2,200.00 °C
Rank: 9 (Overall)
3,045.00 °C
Rank: 3 (Overall)
Francium
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4.2 Boiling Point
Tungsten
4,877.00 °C
Rank: 7 (Overall)
5,027.00 °C
Rank: 6 (Overall)
Flerovium
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4.3 Appearance
4.3.1 Physical State
Solid
Solid
4.3.2 Color
Shiny Gray
Silvery Bluish-Gray
4.3.3 Luster
NA
Metallic
4.4 Hardness
4.4.1 Mohs Hardness
Chromium
Not Available
Rank: N/A (Overall)
7.00
Rank: 3 (Overall)
Cesium
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4.4.2 Brinell Hardness
Osmium
Not Available
Rank: N/A (Overall)
3,490.00 MPa
Rank: 1 (Overall)
Cesium
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4.4.3 Vickers Hardness
Tungsten
Not Available
Rank: N/A (Overall)
Not Available
Rank: N/A (Overall)
Palladium
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4.5 Speed of Sound
Technetium
16,200.00 m/s
Rank: 1 (Overall)
4,940.00 m/s
Rank: 11 (Overall)
Thallium
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4.6 Optical Properties
4.6.1 Refractive Index
Palladium
Not Available
Rank: N/A (Overall)
Not Available
Rank: N/A (Overall)
Mercury
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4.6.2 Reflectivity
Silver
Not Available
Rank: N/A (Overall)
Not Available
Rank: N/A (Overall)
Molybdenum
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4.7 Allotropes
6% Transition Metals Metals have it !
6% Transition Metals Metals have it !
4.7.1 α Allotropes
Not Available
Not Available
4.7.2 β Allotropes
Not Available
Not Available
4.7.3 γ Allotropes
Not Available
Not Available
5 Chemical
5.1 Chemical Formula
Tc
Os
5.2 Isotopes
5.2.1 Known Isotopes
Palladium
18
Rank: 21 (Overall)
35
Rank: 4 (Overall)
Tennessine
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5.3 Electronegativity
5.3.1 Pauling Electronegativity
Gold
1.90
Rank: 11 (Overall)
2.20
Rank: 4 (Overall)
Francium
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5.3.2 Sanderson Electronegativity
Cobalt
Not Available
Rank: N/A (Overall)
Not Available
Rank: N/A (Overall)
Cesium
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5.3.3 Allred Rochow Electronegativity
Gallium
1.36
Rank: 20 (Overall)
1.52
Rank: 12 (Overall)
Cesium
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5.3.4 Mulliken-Jaffe Electronegativity
Polonium
Not Available
Rank: N/A (Overall)
Not Available
Rank: N/A (Overall)
Cesium
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5.3.5 Allen Electronegativity
Berkelium
1.51
Rank: 28 (Overall)
1.65
Rank: 19 (Overall)
Cesium
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5.4 Electropositivity
5.4.1 Pauling Electropositivity
Francium
2.10
Rank: 42 (Overall)
1.80
Rank: 49 (Overall)
Gold
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5.5 Ionization Energies
5.5.1 1st Energy Level
Chromium
702.00 kJ/mol
Rank: 36 (Overall)
840.00 kJ/mol
Rank: 12 (Overall)
Cesium
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5.5.2 2nd Energy Level
Chromium
1,470.00 kJ/mol
Rank: 41 (Overall)
1,309.80 kJ/mol
Rank: 53 (Overall)
Ruthenium
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5.5.3 3rd Energy Level
Chromium
2,850.00 kJ/mol
Rank: 33 (Overall)
1,600.00 kJ/mol
Rank: 82 (Overall)
Osmium
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5.5.4 4th Energy Level
Chromium
Not Available
Rank: N/A (Overall)
Not Available
Rank: N/A (Overall)
Thorium
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5.5.5 5th Energy Level
Chromium
Not Available
Rank: N/A (Overall)
Not Available
Rank: N/A (Overall)
Dubnium
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5.5.6 6th Energy Level
Chromium
Not Available
Rank: N/A (Overall)
Not Available
Rank: N/A (Overall)
Seaborgium
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5.5.7 7th Energy level
Chromium
Not Available
Rank: N/A (Overall)
Not Available
Rank: N/A (Overall)
Bohrium
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5.5.8 8th Energy Level
Chromium
Not Available
Rank: N/A (Overall)
Not Available
Rank: N/A (Overall)
Hassium
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5.5.9 9th Energy Level
Chromium
Not Available
Rank: N/A (Overall)
Not Available
Rank: N/A (Overall)
Yttrium
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5.5.10 10th Energy Level
Chromium
Not Available
Rank: N/A (Overall)
Not Available
Rank: N/A (Overall)
Strontium
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5.5.11 11th Energy Level
Magnesium
Not Available
Rank: N/A (Overall)
Not Available
Rank: N/A (Overall)
Yttrium
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5.5.12 12th Energy Level
Magnesium
Not Available
Rank: N/A (Overall)
Not Available
Rank: N/A (Overall)
Molybdenum
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5.5.13 13th Energy Level
Titanium
Not Available
Rank: N/A (Overall)
Not Available
Rank: N/A (Overall)
Molybdenum
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5.5.14 14th Energy Level
Vanadium
Not Available
Rank: N/A (Overall)
Not Available
Rank: N/A (Overall)
Molybdenum
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5.5.15 15th Energy Level
Chromium
Not Available
Rank: N/A (Overall)
Not Available
Rank: N/A (Overall)
Manganese
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5.5.16 16th Energy Level
Manganese
Not Available
Rank: N/A (Overall)
Not Available
Rank: N/A (Overall)
Iron
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5.5.17 17th Energy Level
Iron
Not Available
Rank: N/A (Overall)
Not Available
Rank: N/A (Overall)
Cobalt
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5.5.18 18th Energy Level
Cobalt
Not Available
Rank: N/A (Overall)
Not Available
Rank: N/A (Overall)
Nickel
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5.5.19 19th Energy Level
Nickel
Not Available
Rank: N/A (Overall)
Not Available
Rank: N/A (Overall)
Copper
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5.5.20 20th Energy Level
Zinc
Not Available
Rank: N/A (Overall)
Not Available
Rank: N/A (Overall)
Molybdenum
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5.5.21 21st Energy Level
Zinc
Not Available
Rank: N/A (Overall)
Not Available
Rank: N/A (Overall)
Molybdenum
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5.5.22 22nd Energy Level
Copper
Not Available
Rank: N/A (Overall)
Not Available
Rank: N/A (Overall)
Molybdenum
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5.5.23 23rd Energy Level
Copper
Not Available
Rank: N/A (Overall)
Not Available
Rank: N/A (Overall)
Molybdenum
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5.5.24 24th Energy Level
Iron
Not Available
Rank: N/A (Overall)
Not Available
Rank: N/A (Overall)
Molybdenum
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5.5.25 25th Energy Level
Molybdenum
Not Available
Rank: N/A (Overall)
Not Available
Rank: N/A (Overall)
Molybdenum
5.5.26 26th Energy Level
Molybdenum
Not Available
Rank: N/A (Overall)
Not Available
Rank: N/A (Overall)
Molybdenum
5.5.27 27th Energy Level
Molybdenum
Not Available
Rank: N/A (Overall)
Not Available
Rank: N/A (Overall)
Molybdenum
5.5.28 28th Energy Level
Molybdenum
Not Available
Rank: N/A (Overall)
Not Available
Rank: N/A (Overall)
Molybdenum
5.5.29 29th Energy Level
Molybdenum
Not Available
Rank: N/A (Overall)
Not Available
Rank: N/A (Overall)
Molybdenum
5.5.30 30th Energy Level
Molybdenum
Not Available
Rank: N/A (Overall)
Not Available
Rank: N/A (Overall)
Molybdenum
5.6 Electrochemical Equivalent
Francium
0.52 g/amp-hr
Rank: 68 (Overall)
1.77 g/amp-hr
Rank: 38 (Overall)
Beryllium
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5.7 Electron Work Function
Platinum
Not Available
Rank: N/A (Overall)
4.83 eV
Rank: 8 (Overall)
Cesium
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5.8 Other Chemical Properties
Anti Corrosion, Ionization, Radioactive Isotopes, Radioactivity, Solubility
Chemical Stability, Ionization, Solubility
6 Atomic
6.1 Atomic Number
Tennessine
43
Rank: 69 (Overall)
76
Rank: 40 (Overall)
Lithium
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6.2 Electron Configuration
[Kr] 4d5 5s2
[Xe] 4f14 5d6 6s2
6.3 Crystal Structure
Hexagonal Close Packed (HCP)
Hexagonal Close Packed (HCP)
6.3.1 Crystal Lattice
6.4 Atom
6.4.1 Number of Protons
Tennessine
43
Rank: 68 (Overall)
76
Rank: 39 (Overall)
Lithium
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6.4.2 Number of Neutrons
Flerovium
55
Rank: 51 (Overall)
114
Rank: 25 (Overall)
Lithium
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6.4.3 Number of Electrons
Tennessine
43
Rank: 68 (Overall)
76
Rank: 39 (Overall)
Lithium
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6.5 Radius of an Atom
6.5.1 Atomic Radius
Cesium
136.00 pm
Rank: 41 (Overall)
133.80 pm
Rank: 44 (Overall)
Beryllium
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6.5.2 Covalent Radius
Francium
147.00 pm
Rank: 37 (Overall)
Not Available
Rank: N/A (Overall)
Beryllium
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6.5.3 Van der Waals Radius
Francium
200.00 pm
Rank: 28 (Overall)
216.00 pm
Rank: 24 (Overall)
Zinc
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6.6 Atomic Weight
Tennessine
98.00 amu
Rank: 63 (Overall)
190.23 amu
Rank: 35 (Overall)
Lithium
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6.7 Atomic Volume
Cesium
8.50 cm3/mol
Rank: 57 (Overall)
8.49 cm3/mol
Rank: 58 (Overall)
Manganese
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6.8 Adjacent Atomic Numbers
6.8.1 Previous Element
6.8.2 Next Element
6.9 Valence Electron Potential
Platinum
180.00 (-eV)
Rank: 3 (Overall)
91.40 (-eV)
Rank: 12 (Overall)
Francium
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6.10 Lattice Constant
Manganese
273.50 pm
Rank: 65 (Overall)
273.44 pm
Rank: 66 (Overall)
Beryllium
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6.11 Lattice Angles
π/2, π/2, 2 π/3
π/2, π/2, 2 π/3
6.12 Lattice C/A Ratio
Cadmium
1.60
Rank: 5 (Overall)
1.58
Rank: 14 (Overall)
Beryllium
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7 Mechanical
7.1 Density
7.1.1 Density At Room Temperature
Hassium
11.00 g/cm3
Rank: 34 (Overall)
22.59 g/cm3
Rank: 9 (Overall)
Lithium
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7.1.2 Density When Liquid (at m.p.)
Osmium
Not Available
Rank: N/A (Overall)
20.00 g/cm3
Rank: 1 (Overall)
Lithium
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7.2 Tensile Strength
Iron
Not Available
Rank: N/A (Overall)
1,000.00 MPa
Rank: 4 (Overall)
Indium
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7.3 Viscosity
Mercury
Not Available
Rank: N/A (Overall)
Not Available
Rank: N/A (Overall)
Mercury
7.4 Vapor Pressure
7.4.1 Vapor Pressure at 1000 K
Strontium
Not Available
Rank: N/A (Overall)
Not Available
Rank: N/A (Overall)
Cerium
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7.4.2 Vapor Pressure at 2000 K
Chromium
Not Available
Rank: N/A (Overall)
0.00 (Pa)
Rank: 28 (Overall)
Tungsten
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7.5 Elasticity properties
7.5.1 Shear Modulus
Osmium
Not Available
Rank: N/A (Overall)
222.00 GPa
Rank: 1 (Overall)
Potassium
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7.5.2 Bulk Modulus
Osmium
Not Available
Rank: N/A (Overall)
462.00 GPa
Rank: 1 (Overall)
Cesium
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7.5.3 Young's Modulus
Iridium
Not Available
Rank: N/A (Overall)
Not Available
Rank: N/A (Overall)
Cesium
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7.6 Poisson Ratio
Gallium
Not Available
Rank: N/A (Overall)
0.25
Rank: 24 (Overall)
Beryllium
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7.7 Other Mechanical Properties
NA
Ductile
8 Magnetic
8.1 Magnetic Characteristics
8.1.1 Specific Gravity
Cobalt
11.50
Rank: 24 (Overall)
22.57
Rank: 2 (Overall)
Lithium
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8.1.2 Magnetic Ordering
Paramagnetic
Paramagnetic
8.1.3 Permeability
Iron
Not Available
Rank: N/A (Overall)
Not Available
Rank: N/A (Overall)
Bismuth
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8.1.4 Susceptibility
Iron
Not Available
Rank: N/A (Overall)
Not Available
Rank: N/A (Overall)
Bismuth
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8.2 Electrical Properties
8.2.1 Electrical Property
Conductor
Conductor
8.2.2 Resistivity
Mercury
200.00 nΩ·m
Rank: 18 (Overall)
81.20 nΩ·m
Rank: 35 (Overall)
Thallium
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8.2.3 Electrical Conductivity
Silver
0.07 106/cm Ω
Rank: 30 (Overall)
0.11 106/cm Ω
Rank: 18 (Overall)
Plutonium
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8.2.4 Electron Affinity
Gold
53.00 kJ/mol
Rank: 18 (Overall)
106.10 kJ/mol
Rank: 9 (Overall)
Mercury
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9 Thermal
9.1 Specific Heat
Lithium
0.21 J/(kg K)
Rank: 29 (Overall)
0.13 J/(kg K)
Rank: 39 (Overall)
Americium
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9.2 Molar Heat Capacity
Americium
24.27 J/mol·K
Rank: 52 (Overall)
24.70 J/mol·K
Rank: 49 (Overall)
Beryllium
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9.3 Thermal Conductivity
Silver
50.60 W/m·K
Rank: 30 (Overall)
87.60 W/m·K
Rank: 19 (Overall)
Neptunium
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9.4 Critical Temperature
Lithium
Not Available
Rank: N/A (Overall)
Not Available
Rank: N/A (Overall)
Ytterbium
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9.5 Thermal Expansion
Cesium
7.10 µm/(m·K)
Rank: 49 (Overall)
5.10 µm/(m·K)
Rank: 56 (Overall)
Tungsten
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9.6 Enthalpy
9.6.1 Enthalpy of Vaporization
Tungsten
660.00 kJ/mol
Rank: 6 (Overall)
627.60 kJ/mol
Rank: 7 (Overall)
Zinc
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9.6.2 Enthalpy of Fusion
Tungsten
23.01 kJ/mol
Rank: 9 (Overall)
29.30 kJ/mol
Rank: 4 (Overall)
Cesium
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9.6.3 Enthalpy of Atomization
Tungsten
649.00 kJ/mol
Rank: 8 (Overall)
669.00 kJ/mol
Rank: 6 (Overall)
Mercury
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9.7 Standard Molar Entropy
Protactinium
181.10 J/mol.K
Rank: 2 (Overall)
32.60 J/mol.K
Rank: 47 (Overall)
Beryllium
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