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Technetium
Technetium

Scandium
Scandium



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Technetium
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Scandium

Technetium Scandium Comparison

1 Periodic Table
1.1 Symbol
Tc
Sc
1.2 Group Number
73
Gadolinium Metal
0 17
1.3 Period Number
54
Lithium Metal
2 7
1.4 Block
d block
d block
1.5 Element Family
Transition Metal
Transition Metal
1.6 CAS Number
74402687440202
Aluminium Metal
7429905 54386242
1.7 Space Group Name
P63/mmc
P63/mmc
1.8 Space Group Number
194.00194.00
Plutonium Metal
11 229
2 Facts
2.1 Interesting Facts
  • Original name of Technetium was Masurium.
  • At the time of its discovery it found in sample of Molybdenum.
  • Scandium is known as one of the rare earth elements.
  • Scandium metal found in rare minerals called Wolframite .
2.2 Sources
Made by Bombarding Molybdenum with Deuterons
Found in Minerals, Mining, Ores of metals, Ores of Minerals
2.3 History
2.3.1 Who Discovered
Emilio Segrè and Carlo Perriero
Lars Fredrik Nilson
2.3.2 Discovery
In 1937
In 1879
2.4 Abundance
2.4.1 Abundance In Universe
NA3 * 10-6 %
Thallium Metal
5E-09 0.11
2.4.6 Abundance In Sun
~-9999 %~0.000004 %
Beryllium Metal
1E-08 0.1
2.4.11 Abundance In Meteorites
NA0.00 %
Gold Metal
1.7E-07 22
3.4.5 Abundance In Earth's Crust
NA0.00 %
Radium Metal
9.9E-12 8.1
3.4.8 Abundance In Oceans
NA0.00 %
Protactinium Metal
2E-23 1.1
3.4.9 Abundance In Humans
NANA
Radium Metal
1E-13 1.4
4 Uses
4.1 Uses & Benefits
  • Technetium is a radioactive metal and hence it is used for medical studies and other research purposes.
  • Uses of Scandium are limited to research purpose only. However, it has very low density and higher melting point.
  • Its compounds like scandium iodide is used in mercury vapor lamps to produce very bright white light.
4.1.1 Industrial Uses
NA
Electrical Industry, Electronic Industry
4.1.2 Medical Uses
NA
NA
4.1.3 Other Uses
Alloys, Nuclear Research, Research Purposes
Alloys
4.2 Biological Properties
4.2.1 Toxicity
Low Toxic
Non Toxic
4.2.2 Present in Human Body
4.2.3 In Blood
0.00 Blood/mg dm-30.01 Blood/mg dm-3
Plutonium Metal
0 1970
4.3.3 In Bone
0.00 p.p.m.0.00 p.p.m.
Plutonium Metal
0 170000
5 Physical
5.1 Melting Point
2,200.00 °C1,539.00 °C
Francium Metal
27 3410
5.2 Boiling Point
4,877.00 °C2,832.00 °C
Flerovium Metal
147 5660
5.5 Appearance
5.5.1 Physical State
Solid
Solid
5.5.2 Color
Shiny Gray
Silvery White
5.5.3 Luster
NA
Lustrous
5.6 Hardness
5.6.1 Mohs Hardness
NANA
Cesium Metal
0.2 8.5
6.1.1 Brinell Hardness
NA750.00 MPa
Cesium Metal
0.14 3490
6.4.1 Vickers Hardness
NANA
Palladium Metal
121 3430
6.7 Speed of Sound
16,200.00 m/sNA
Thallium Metal
818 16200
6.9 Optical Properties
6.9.1 Refractive Index
NANA
Mercury Metal
1.000933 1.7229
6.11.1 Reflectivity
NANA
Molybdenum Metal
58 97
7.2 Allotropes
7.2.1 α Allotropes
Not Available
Not Available
7.2.2 β Allotropes
Not Available
Not Available
7.2.3 γ Allotropes
Not Available
Not Available
8 Chemical
8.1 Chemical Formula
Tc
Sc
8.2 Isotopes
8.2.1 Known Isotopes
1813
Tennessine Metal
0 38
8.4 Electronegativity
8.4.1 Pauling Electronegativity
1.901.36
Francium Metal
0.7 2.54
8.4.3 Sanderson Electronegativity
NA1.02
Cesium Metal
0.22 2.56
8.7.1 Allred Rochow Electronegativity
1.361.20
Cesium Metal
0.86 1.82
8.9.2 Mulliken-Jaffe Electronegativity
NANA
Cesium Metal
0.62 2.48
8.11.1 Allen Electronegativity
1.511.19
Cesium Metal
0.659 2.7
8.14 Electropositivity
8.14.1 Pauling Electropositivity
2.102.64
Gold Metal
1.46 3.3
8.17 Ionization Energies
8.17.1 1st Energy Level
702.00 kJ/mol633.10 kJ/mol
Cesium Metal
375.7 26130
9.1.3 2nd Energy Level
1,470.00 kJ/mol1,235.00 kJ/mol
Ruthenium Metal
710.2162 28750
9.1.4 3rd Energy Level
2,850.00 kJ/mol2,388.60 kJ/mol
Osmium Metal
1600 34230
9.1.7 4th Energy Level
NA7,090.60 kJ/mol
Thorium Metal
2780 37066
9.3.1 5th Energy Level
NA8,843.00 kJ/mol
Dubnium Metal
4305.2 97510
9.4.1 6th Energy Level
NA10,679.00 kJ/mol
Seaborgium Metal
5715.8 105800
10.2.2 7th Energy level
NA13,310.00 kJ/mol
Bohrium Metal
7226.8 114300
10.2.6 8th Energy Level
NA15,250.00 kJ/mol
Hassium Metal
8857.4 125300
10.3.2 9th Energy Level
NA17,370.00 kJ/mol
Yttrium Metal
14110 134700
10.4.3 10th Energy Level
NA21,726.00 kJ/mol
Strontium Metal
17100 144300
10.4.5 11th Energy Level
NA24,102.00 kJ/mol
Yttrium Metal
19900 169988
10.4.7 12th Energy Level
NA66,320.00 kJ/mol
Molybdenum Metal
22219 189368
10.4.10 13th Energy Level
NA73,010.00 kJ/mol
Molybdenum Metal
26930 76015
11.1.1 14th Energy Level
NA80,160.00 kJ/mol
Molybdenum Metal
29196 86450
11.2.1 15th Energy Level
NA89,490.00 kJ/mol
Manganese Metal
41987 97510
12.1.2 16th Energy Level
NA97,400.00 kJ/mol
Iron Metal
47206 109480
12.2.3 17th Energy Level
NA105,600.00 kJ/mol
Cobalt Metal
52737 122200
12.2.4 18th Energy Level
NA117,000.00 kJ/mol
Nickel Metal
58570 134810
12.3.1 19th Energy Level
NA124,270.00 kJ/mol
Copper Metal
64702 148700
12.5.1 20th Energy Level
NANA
Molybdenum Metal
80400 171200
12.5.2 21st Energy Level
NANA
Molybdenum Metal
87000 179100
12.6.2 22nd Energy Level
NANA
Molybdenum Metal
93400 184900
12.6.3 23rd Energy Level
NANA
Molybdenum Metal
98420 198800
12.6.6 24th Energy Level
NANA
Molybdenum Metal
104400 195200
12.6.7 25th Energy Level
NANA
Molybdenum Metal
121900 121900
13.1.2 26th Energy Level
NANA
Molybdenum Metal
127700 127700
13.2.1 27th Energy Level
NANA
Molybdenum Metal
133800 133800
13.3.1 28th Energy Level
NANA
Molybdenum Metal
139800 139800
13.4.1 29th Energy Level
NANA
Molybdenum Metal
148100 148100
13.4.2 30th Energy Level
NANA
Molybdenum Metal
154500 154500
13.6 Electrochemical Equivalent
0.52 g/amp-hr0.56 g/amp-hr
Beryllium Metal
0.16812 8.3209
13.8 Electron Work Function
NA3.50 eV
Cesium Metal
2.14 5.65
13.10 Other Chemical Properties
Anti Corrosion, Ionization, Radioactive Isotopes, Radioactivity, Solubility
Corrosion, Flammable, Ionization, Radioactive Isotopes, Solubility
14 Atomic
14.1 Atomic Number
4321
Lithium Metal
3 117
14.2 Electron Configuration
[Kr] 4d5 5s2
[Ar] 3d1 4s2
14.3 Crystal Structure
Hexagonal Close Packed (HCP)
Hexagonal Close Packed (HCP)
14.3.1 Crystal Lattice
14.4 Atom
14.4.1 Number of Protons
4321
Lithium Metal
3 117
14.4.3 Number of Neutrons
5524
Lithium Metal
4 184
14.5.1 Number of Electrons
4321
Lithium Metal
3 117
14.6 Radius of an Atom
14.6.1 Atomic Radius
136.00 pm162.00 pm
Beryllium Metal
112 265
14.6.2 Covalent Radius
147.00 pm170.00 pm
Beryllium Metal
96 260
14.6.3 Van der Waals Radius
200.00 pm211.00 pm
Zinc Metal
139 348
14.7 Atomic Weight
98.00 amu44.96 amu
Lithium Metal
6.94 294
14.8 Atomic Volume
8.50 cm3/mol15.00 cm3/mol
Manganese Metal
1.39 71.07
14.9 Adjacent Atomic Numbers
14.9.1 Previous Element
14.9.2 Next Element
14.10 Valence Electron Potential
180.00 (-eV)58.00 (-eV)
Francium Metal
8 392.42
14.11 Lattice Constant
273.50 pm330.90 pm
Beryllium Metal
228.58 891.25
14.12 Lattice Angles
π/2, π/2, 2 π/3
π/2, π/2, 2 π/3
14.13 Lattice C/A Ratio
1.601.59
Beryllium Metal
1.567 1.886
15 Mechanical
15.1 Density
15.1.1 Density At Room Temperature
11.00 g/cm32.99 g/cm3
Lithium Metal
0.534 40.7
15.1.2 Density When Liquid (at m.p.)
NA2.80 g/cm3
Lithium Metal
0.512 20
15.2 Tensile Strength
NANA
Indium Metal
2.5 11000
15.3 Viscosity
NANA
Mercury Metal
0.001526 0.001526
15.4 Vapor Pressure
15.4.1 Vapor Pressure at 1000 K
NA0.00 (Pa)
Cerium Metal
2.47E-11 121
15.4.2 Vapor Pressure at 2000 K
NA91.30 (Pa)
Tungsten Metal
2.62E-10 774
15.5 Elasticity properties
15.5.1 Shear Modulus
NA29.10 GPa
Potassium Metal
1.3 222
15.5.2 Bulk Modulus
NA56.60 GPa
Cesium Metal
1.6 462
15.5.3 Young's Modulus
NA74.40 GPa
Cesium Metal
1.7 528
15.6 Poisson Ratio
NA0.28
Beryllium Metal
0.032 0.47
15.7 Other Mechanical Properties
NA
NA
16 Magnetic
16.1 Magnetic Characteristics
16.1.1 Specific Gravity
11.502.99
Lithium Metal
0.53 4500
16.1.2 Magnetic Ordering
Paramagnetic
Paramagnetic
16.1.3 Permeability
NANA
Bismuth Metal
1.25643E-06 0.0063
16.1.4 Susceptibility
NANA
Bismuth Metal
-0.000166 200000
16.2 Electrical Properties
16.2.1 Electrical Property
Conductor
Conductor
16.2.2 Resistivity
200.00 nΩ·m562.00 nΩ·m
Thallium Metal
0.18 961
16.2.3 Electrical Conductivity
0.07 106/cm Ω0.02 106/cm Ω
Plutonium Metal
0.00666 0.63
16.2.4 Electron Affinity
53.00 kJ/mol18.10 kJ/mol
Mercury Metal
0 222.8
17 Thermal
17.1 Specific Heat
0.21 J/(kg K)0.60 J/(kg K)
Americium Metal
0.11 3.6
17.2 Molar Heat Capacity
24.27 J/mol·K25.52 J/mol·K
Beryllium Metal
16.443 62.7
17.3 Thermal Conductivity
50.60 W/m·K15.80 W/m·K
Neptunium Metal
6.3 429
17.4 Critical Temperature
NANA
Ytterbium Metal
26.3 3223
17.5 Thermal Expansion
7.10 µm/(m·K)10.20 µm/(m·K)
Tungsten Metal
4.5 97
17.6 Enthalpy
17.6.1 Enthalpy of Vaporization
660.00 kJ/mol314.20 kJ/mol
Zinc Metal
7.32 799.1
17.6.2 Enthalpy of Fusion
23.01 kJ/mol14.10 kJ/mol
Cesium Metal
2.1 35.23
17.6.3 Enthalpy of Atomization
649.00 kJ/mol343.00 kJ/mol
Mercury Metal
61.5 837
17.7 Standard Molar Entropy
181.10 J/mol.K34.60 J/mol.K
Beryllium Metal
9.5 198.1