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Technetium vs Platinum

Technetium
Platinum
Platinum vs Technetium


Periodic Table
Symbol
Tc  
Pt  
Group Number
7  
11
10  
8
Period Number
5  
6  
Block
d block  
d block  
Element Family
Transition Metal  
Transition Metal  
CAS Number
7440268  
99+
7440064  
99+
Space Group Name
P63/mmc  
Fm_ 3m  
Space Group Number
194.00  
7
225.00  
3
Facts
Interesting Facts
  • Original name of Technetium was Masurium.
  • At the time of its discovery it found in sample of Molybdenum.
  
  • Platinum is the rarest metal from the Precious metal categories..
  • Commercially Platinum is produced as a byproduct in ores of nickel.
  
Sources
Made by Bombarding Molybdenum with Deuterons  
Mining, Ores of metals, Ores of Minerals  
History
  
  
Who Discovered
Emilio Segrè and Carlo Perriero  
Antonio de Ulloa  
Discovery
In 1937  
In 1735  
Abundance
  
  
Abundance In Universe
0.00 %  
40
0.00 %  
20
Abundance In Sun
0.00 %  
18
0.00 %  
19
Abundance In Meteorites
-  
0.00 %  
25
Abundance In Earth's Crust
0.00 %  
99+
0.00 %  
99+
Abundance In Oceans
-  
-  
Abundance In Humans
-  
0.00 %  
24
Uses
Uses & Benefits
  • Technetium is a radioactive metal and hence it is used for medical studies and other research purposes.
  
  • Platinum metal is mainly used in jewellery.
  • Platinum is used as an industrial catalyst in production of nitric acid, silicone and benzene.
  
Industrial Uses
-  
Aerospace Industry, Chemical Industry  
Medical Uses
-  
Dentistry, Pharmaceutical Industry, Surgical Instruments Manufacturing  
Other Uses
Alloys, Nuclear Research, Research Purposes  
Alloys, Bullion, Coinage, Jewellery, Sculptures, Statues  
Biological Properties
  
  
Toxicity
Low Toxic  
Non Toxic  
Present in Human Body
No  
No  
In Blood
0.00 Blood/mg dm-3  
40
0.00 Blood/mg dm-3  
37
In Bone
0.00 p.p.m.  
99+
0.00 p.p.m.  
99+
Physical
Melting Point
2,200.00 °C  
9
1,772.00 °C  
16
Boiling Point
4,877.00 °C  
7
3,827.00 °C  
15
Appearance
  
  
Physical State
Solid  
Solid  
Color
Shiny Gray  
Silvery White  
Luster
-  
Metallic  
Hardness
  
  
Mohs Hardness
2.25  
16
3.50  
12
Brinell Hardness
550.00 MPa  
27
300.00 MPa  
99+
Vickers Hardness
500.00 MPa  
35
400.00 MPa  
99+
Speed of Sound
16,200.00 m/s  
1
2,800.00 m/s  
99+
Optical Properties
  
  
Refractive Index
1.90  
18
2.41  
6
Reflectivity
35.00 %  
34
73.00 %  
10
Allotropes
No  
No  
α Allotropes
-  
-  
β Allotropes
-  
-  
γ Allotropes
-  
-  
Chemical
Chemical Formula
Tc  
Pt  
Isotopes
  
  
Known Isotopes
18  
21
35  
4
Electronegativity
  
  
Pauling Electronegativity
1.90  
12
2.28  
4
Sanderson Electronegativity
1.90  
13
2.28  
5
Allred Rochow Electronegativity
1.36  
21
1.44  
18
Mulliken-Jaffe Electronegativity
1.90  
13
2.20  
6
Allen Electronegativity
1.51  
31
1.72  
19
Electropositivity
  
  
Pauling Electropositivity
2.10  
99+
1.72  
99+
Ionization Energies
  
  
1st Energy Level
702.00 kJ/mol  
36
870.00 kJ/mol  
10
2nd Energy Level
1,470.00 kJ/mol  
99+
1,791.00 kJ/mol  
22
3rd Energy Level
2,850.00 kJ/mol  
34
2,277.00 kJ/mol  
99+
4th Energy Level
7,020.00 kJ/mol  
14
8,702.00 kJ/mol  
6
5th Energy Level
7,020.00 kJ/mol  
28
8,702.00 kJ/mol  
9
6th Energy Level
7,020.00 kJ/mol  
99+
8,700.00 kJ/mol  
27
7th Energy level
4,700.00 kJ/mol  
99+
8,700.00 kJ/mol  
23
8th Energy Level
4,700.00 kJ/mol  
99+
8,700.00 kJ/mol  
23
9th Energy Level
7,020.00 kJ/mol  
35
5,660.00 kJ/mol  
99+
10th Energy Level
7,020.00 kJ/mol  
39
8,700.00 kJ/mol  
24
11th Energy Level
7,020.00 kJ/mol  
37
8,700.00 kJ/mol  
21
12th Energy Level
7,020.00 kJ/mol  
99+
8,700.00 kJ/mol  
99+
13th Energy Level
7,020.00 kJ/mol  
33
8,700.00 kJ/mol  
16
14th Energy Level
7,020.00 kJ/mol  
23
870.00 kJ/mol  
99+
15th Energy Level
70,200.00 kJ/mol  
29
87,000.00 kJ/mol  
9
16th Energy Level
70,200.00 kJ/mol  
24
870.00 kJ/mol  
99+
17th Energy Level
702.50 kJ/mol  
99+
870.00 kJ/mol  
27
18th Energy Level
7,020.00 kJ/mol  
35
8,700.00 kJ/mol  
16
19th Energy Level
702.00 kJ/mol  
99+
870.00 kJ/mol  
25
20th Energy Level
702.00 kJ/mol  
35
870.00 kJ/mol  
15
21st Energy Level
702.00 kJ/mol  
99+
870.00 kJ/mol  
38
22nd Energy Level
702.00 kJ/mol  
29
870.00 kJ/mol  
13
23rd Energy Level
702.00 kJ/mol  
99+
870.10 kJ/mol  
39
24th Energy Level
702.50 kJ/mol  
28
870.00 kJ/mol  
9
25th Energy Level
702.00 kJ/mol  
30
870.00 kJ/mol  
7
26th Energy Level
702.00 kJ/mol  
29
870.00 kJ/mol  
7
27th Energy Level
702.00 kJ/mol  
30
870.10 kJ/mol  
6
28th Energy Level
702.00 kJ/mol  
35
870.10 kJ/mol  
9
29th Energy Level
702.00 kJ/mol  
36
870.00 kJ/mol  
10
30th Energy Level
702.00 kJ/mol  
30
870.00 kJ/mol  
7
Electrochemical Equivalent
0.52 g/amp-hr  
99+
1.82 g/amp-hr  
39
Electron Work Function
4.90 eV  
12
5.65 eV  
4
Other Chemical Properties
Anti Corrosion, Ionization, Radioactive Isotopes, Radioactivity, Solubility  
Chemical Stability, Anti Corrosion, Ionization  
Atomic
Atomic Number
43  
99+
78  
38
Electron Configuration
[Kr] 4d5 5s2  
[Xe] 4f14 5d9 6s1  
Crystal Structure
Hexagonal Close Packed (HCP)  
Face Centered Cubic (FCC)  
Crystal Lattice
HCP-Crystal-Structure-of-Technetium.jpg#100  
FCC-Crystal-Structure-of-Platinum.jpg#100  
Atom
  
  
Number of Protons
43  
99+
78  
38
Number of Neutrons
55  
99+
117  
25
Number of Electrons
43  
99+
78  
38
Radius of an Atom
  
  
Atomic Radius
136.00 pm  
99+
139.00 pm  
99+
Covalent Radius
147.00 pm  
39
136.00 pm  
99+
Van der Waals Radius
200.00 pm  
35
175.00 pm  
99+
Atomic Weight
98.00 amu  
99+
47.87 amu  
99+
Atomic Volume
8.50 cm3/mol  
99+
9.09 cm3/mol  
99+
Adjacent Atomic Numbers
  
  
Previous Element
Molybdenum
  
Iridium
  
Next Element
Ruthenium
  
Gold
  
Valence Electron Potential
180.00 (-eV)  
3
392.42 (-eV)  
1
Lattice Constant
273.50 pm  
99+
392.42 pm  
27
Lattice Angles
π/2, π/2, 2 π/3  
π/2, π/2, π/2  
Lattice C/A Ratio
1.60  
21
1.56  
99+
Mechanical
Density
  
  
Density At Room Temperature
11.00 g/cm3  
36
21.45 g/cm3  
11
Density When Liquid (at m.p.)
11.00 g/cm3  
34
19.77 g/cm3  
12
Tensile Strength
50.00 MPa  
38
125.00 MPa  
26
Viscosity
0.00  
25
0.00  
16
Vapor Pressure
  
  
Vapor Pressure at 1000 K
0.00 (Pa)  
37
0.00 (Pa)  
16
Vapor Pressure at 2000 K
0.00 (Pa)  
99+
0.07 (Pa)  
18
Elasticity properties
  
  
Shear Modulus
27.00 GPa  
34
61.00 GPa  
14
Bulk Modulus
100.00 GPa  
16
230.00 GPa  
6
Young's Modulus
50.00 GPa  
39
168.00 GPa  
15
Poisson Ratio
0.38  
6
0.38  
6
Other Mechanical Properties
-  
Ductile, Malleable  
Magnetic
Magnetic Characteristics
  
  
Specific Gravity
11.50  
37
21.45  
13
Magnetic Ordering
Paramagnetic  
Paramagnetic  
Permeability
0.00 H/m  
17
0.00 H/m  
14
Susceptibility
0.00  
24
0.00  
20
Electrical Properties
  
  
Electrical Property
Conductor  
Conductor  
Resistivity
200.00 nΩ·m  
18
105.00 nΩ·m  
30
Electrical Conductivity
0.07 106/cm Ω  
35
0.10 106/cm Ω  
26
Electron Affinity
53.00 kJ/mol  
23
205.30 kJ/mol  
2
Thermal
Specific Heat
0.21 J/(kg K)  
30
0.13 J/(kg K)  
40
Molar Heat Capacity
24.27 J/mol·K  
99+
25.86 J/mol·K  
99+
Thermal Conductivity
50.60 W/m·K  
30
71.60 W/m·K  
24
Critical Temperature
2,150.00 K  
16
2,041.00 K  
19
Thermal Expansion
7.10 µm/(m·K)  
99+
8.80 µm/(m·K)  
99+
Enthalpy
  
  
Enthalpy of Vaporization
660.00 kJ/mol  
7
510.50 kJ/mol  
15
Enthalpy of Fusion
23.01 kJ/mol  
9
19.70 kJ/mol  
12
Enthalpy of Atomization
649.00 kJ/mol  
9
565.00 kJ/mol  
15
Standard Molar Entropy
181.10 J/mol.K  
2
41.60 J/mol.K  
99+
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