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