Technetium Tin Comparison
Periodic Table
Symbol
Tc
Sn
Group Number
7
11
14
4
Period Number
5
5
Block
d block
p block
Element Family
Transition Metal
Post-Transition
CAS Number
7440268
99+
7440315
99+
Space Group Name
P63/mmc
I41/amd
Space Group Number
194.00
5
141.00
7
Facts
Interesting Facts
- Original name of Technetium was Masurium.
- At the time of its discovery it found in sample of Molybdenum.
- In the list of most abundant element Tin is ranked 49th.
- Tin metal does not react with water as well as does not corrode in it.
Sources
Made by Bombarding Molybdenum with Deuterons
Found in Minerals, Mining
History
Who Discovered
Emilio Segrè and Carlo Perriero
Unknown
Discovery
In 1937
Before 3500 BC
Abundance
Abundance In Universe
Not Available
4 * 10-7 %
20
Abundance In Sun
~-9999 %
~0.0000009 %
19
Abundance In Meteorites
Not Available
0.00 %
24
Abundance In Earth's Crust
Not Available
0.00 %
34
Abundance In Oceans
Not Available
0.00 %
26
Abundance In Humans
Not Available
0.00 %
13
Uses
Uses & Benefits
- Technetium is a radioactive metal and hence it is used for medical studies and other research purposes.
- Tin-niobium alloy is used for producing superconducting magnets.
- Tin salt known as a tin II chloride, it is used as a mordant and as a reducing agent for dyeing calico and silk.
Industrial Uses
NA
Automobile Industry, Chemical Industry, Food Industry
Medical Uses
NA
Dentistry
Other Uses
Alloys, Nuclear Research, Research Purposes
NA
Biological Properties
Toxicity
Low Toxic
Non Toxic
Present in Human Body
No
Yes
In Blood
0.00 Blood/mg dm-3
37
0.38 Blood/mg dm-3
10
In Bone
0.00 p.p.m.
36
1.40 p.p.m.
16
Physical Properties
Melting Point
2,200.00 °C
9
231.90 °C
99+
Boiling Point
4,877.00 °C
7
2,270.00 °C
99+
Appearance
Physical State
Solid
Solid
Color
Shiny Gray
Silvery White
Luster
NA
NA
Hardness
Mohs Hardness
Not Available
1.50
18
Brinell Hardness
Not Available
50.00 MPa
99+
Speed of Sound
16,200.00 m/s
1
2,730.00 m/s
32
Optical Properties
Allotropes
No
Yes
α Allotropes
Not Available
Grey Tin (alpha Tin, Tin Pest)
β Allotropes
Not Available
White Tin (Beta Tin)
γ Allotropes
Not Available
Rhombic Tin (gamma Tin)
Chemical Properties
Chemical Formula
Tc
Sn
Isotopes
Known Isotopes
18
21
35
4
Electronegativity
Pauling Electronegativity
1.90
11
1.96
8
Sanderson Electronegativity
Not Available
1.49
15
Allred Rochow Electronegativity
1.36
20
1.72
4
Mulliken-Jaffe Electronegativity
Not Available
2.21
3
Allen Electronegativity
1.51
28
1.82
11
Electropositivity
Pauling Electropositivity
2.10
99+
2.04
99+
Ionization Energies
1st Energy Level
702.00 kJ/mol
36
708.60 kJ/mol
33
2nd Energy Level
1,470.00 kJ/mol
99+
1,411.80 kJ/mol
99+
3rd Energy Level
2,850.00 kJ/mol
33
2,943.00 kJ/mol
30
4th Energy Level
Not Available
3,930.30 kJ/mol
99+
5th Energy Level
Not Available
7,456.00 kJ/mol
13
Electrochemical Equivalent
0.52 g/amp-hr
99+
1.11 g/amp-hr
99+
Electron Work Function
Not Available
4.42 eV
16
Other Chemical Properties
Anti Corrosion, Ionization, Radioactive Isotopes, Radioactivity, Solubility
Ionization, Solubility
Atomic Properties
Atomic Number
43
99+
50
99+
Electron Configuration
[Kr] 4d5 5s2
[Kr] 4d10 5s2 5p2
Crystal Structure
Hexagonal Close Packed (HCP)
Tetragonal (TETR)
Crystal Lattice
HCP-Crystal-Structure-of-Technetium.jpg#100
TETR-Crystal-Structure-of-Tin.jpg#100
Atom
Number of Protons
43
99+
50
99+
Number of Neutrons
55
99+
69
99+
Number of Electrons
43
99+
50
99+
Radius of an Atom
Atomic Radius
136.00 pm
99+
140.00 pm
38
Covalent Radius
147.00 pm
37
139.00 pm
99+
Van der Waals Radius
200.00 pm
28
217.00 pm
23
Atomic Weight
98.00 amu
99+
118.71 amu
99+
Atomic Volume
8.50 cm3/mol
99+
16.30 cm3/mol
32
Adjacent Atomic Numbers
Valence Electron Potential
180.00 (-eV)
3
83.50 (-eV)
14
Lattice Constant
273.50 pm
99+
583.18 pm
7
Lattice Angles
π/2, π/2, 2 π/3
π/2, π/2, π/2
Lattice C/A Ratio
1.60
5
Not Available
Mechanical Properties
Density
Density At Room Temperature
11.00 g/cm3
34
7.37 g/cm3
99+
Density When Liquid (at m.p.)
Not Available
6.99 g/cm3
34
Tensile Strength
Not Available
Not Available
Viscosity
Not Available
Not Available
Vapor Pressure
Vapor Pressure at 1000 K
Not Available
0.00 (Pa)
17
Elasticity properties
Shear Modulus
Not Available
18.00 GPa
36
Bulk Modulus
Not Available
58.00 GPa
20
Young's Modulus
Not Available
50.00 GPa
36
Poisson Ratio
Not Available
0.36
8
Other Mechanical Properties
NA
Ductile, Malleable
Magnetic Properties
Magnetic Characteristics
Specific Gravity
11.50
24
7.31
99+
Magnetic Ordering
Paramagnetic
Diamagnetic
Electrical Properties
Electrical Property
Conductor
Superconductor
Resistivity
200.00 nΩ·m
18
115.00 nΩ·m
28
Electrical Conductivity
0.07 106/cm Ω
30
0.09 106/cm Ω
23
Electron Affinity
53.00 kJ/mol
18
107.30 kJ/mol
8
Thermal Properties
Specific Heat
0.21 J/(kg K)
29
0.23 J/(kg K)
28
Molar Heat Capacity
24.27 J/mol·K
99+
27.11 J/mol·K
20
Thermal Conductivity
50.60 W/m·K
30
66.80 W/m·K
25
Critical Temperature
Not Available
Not Available
Thermal Expansion
7.10 µm/(m·K)
99+
22.00 µm/(m·K)
20
Enthalpy
Enthalpy of Vaporization
660.00 kJ/mol
6
290.40 kJ/mol
32
Enthalpy of Fusion
23.01 kJ/mol
9
7.03 kJ/mol
99+
Enthalpy of Atomization
649.00 kJ/mol
8
301.30 kJ/mol
35
Standard Molar Entropy
181.10 J/mol.K
2
51.20 J/mol.K
29
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