Tantalum vs Platinum
Periodic Table
Symbol
Ta
Pt
Group Number
5
13
10
8
Period Number
6
6
Block
d block
d block
Element Family
Transition Metal
Transition Metal
CAS Number
7440257
99+
7440064
99+
Space Group Name
Im_ 3m
Fm_ 3m
Space Group Number
229.00
1
225.00
2
Facts
Interesting Facts
- Tantalum metal is known as corrosion resistance.
- Tantalum metal can easily fabricated and It is a good conductor of heat and electricity.
- Platinum is the rarest metal from the Precious metal categories..
- Commercially Platinum is produced as a byproduct in ores of nickel.
Sources
Found in Minerals, Mining, Ores of Minerals
Mining, Ores of metals, Ores of Minerals
History
Who Discovered
Anders Gustaf Ekeberg
Antonio de Ulloa
Discovery
In 1802
In 1735
Abundance
Abundance In Universe
8 * 10-9 %
31
5 * 10-7 %
19
Abundance In Sun
~-9999 %
~0.0000009 %
19
Abundance In Meteorites
0.00 %
99+
0.00 %
25
Abundance In Earth's Crust
0.00 %
37
0.00 %
99+
Abundance In Oceans
0.00 %
31
Not Available
Uses
Uses & Benefits
- Tantalum metal is mainly used in the manufacturing of electron components. Its Oxide layer acts as an insulator.
- Tantalum metal is also used in surgical transplant like replacement of bone, skull plates and as a woven gauze.
- Platinum metal is mainly used in jewellery.
- Platinum is used as an industrial catalyst in production of nitric acid, silicone and benzene.
Industrial Uses
Electrical Industry, Electronic Industry
Aerospace Industry, Chemical Industry
Medical Uses
NA
Dentistry, Pharmaceutical Industry, Surgical Instruments Manufacturing
Other Uses
Alloys
Alloys, Bullion, Coinage, Jewellery, Sculptures, Statues
Biological Properties
Toxicity
Low Toxic
Non Toxic
Present in Human Body
Yes
No
In Bone
0.03 p.p.m.
28
Not Available
Physical Properties
Melting Point
2,996.00 °C
4
1,772.00 °C
16
Boiling Point
5,425.00 °C
4
3,827.00 °C
15
Appearance
Physical State
Solid
Solid
Color
Gray Blue
Silvery White
Luster
Metallic
Metallic
Hardness
Mohs Hardness
6.50
5
3.50
11
Brinell Hardness
440.00 MPa
28
300.00 MPa
34
Vickers Hardness
870.00 MPa
12
400.00 MPa
25
Speed of Sound
3,400.00 m/s
22
2,800.00 m/s
29
Optical Properties
Reflectivity
78.00 %
6
73.00 %
8
Allotropes
No
No
α Allotropes
Not Available
Not Available
β Allotropes
Not Available
Not Available
γ Allotropes
Not Available
Not Available
Chemical Properties
Chemical Formula
Ta
Pt
Isotopes
Known Isotopes
31
8
35
4
Electronegativity
Pauling Electronegativity
1.50
27
2.28
3
Allred Rochow Electronegativity
1.33
22
1.44
17
Allen Electronegativity
1.34
33
1.72
16
Electropositivity
Pauling Electropositivity
2.50
27
1.72
99+
Ionization Energies
1st Energy Level
761.00 kJ/mol
18
870.00 kJ/mol
10
2nd Energy Level
1,500.00 kJ/mol
40
1,791.00 kJ/mol
21
Electrochemical Equivalent
1.35 g/amp-hr
99+
1.82 g/amp-hr
35
Electron Work Function
4.25 eV
21
5.65 eV
1
Other Chemical Properties
Anti Corrosion, Ionization, Radioactive Isotopes, Radioactivity, Solubility
Chemical Stability, Anti Corrosion, Ionization
Atomic Properties
Atomic Number
73
99+
78
38
Electron Configuration
[Xe] 4f14 5d3 6s2
[Xe] 4f14 5d9 6s1
Crystal Structure
Body Centered Cubic (BCC)
Face Centered Cubic (FCC)
Crystal Lattice
BCC-Crystal-Structure-.jpg#100
FCC-Crystal-Structure-of-Platinum.jpg#100
Atom
Number of Protons
73
99+
78
38
Number of Neutrons
108
28
117
24
Number of Electrons
73
99+
78
38
Radius of an Atom
Atomic Radius
146.00 pm
35
139.00 pm
39
Covalent Radius
170.00 pm
25
136.00 pm
99+
Van der Waals Radius
200.00 pm
28
175.00 pm
36
Atomic Weight
180.95 amu
38
47.87 amu
99+
Atomic Volume
10.90 cm3/mol
99+
9.09 cm3/mol
99+
Adjacent Atomic Numbers
Valence Electron Potential
110.00 (-eV)
7
392.42 (-eV)
1
Lattice Constant
330.13 pm
99+
392.42 pm
24
Lattice Angles
π/2, π/2, π/2
π/2, π/2, π/2
Lattice C/A Ratio
Not Available
Not Available
Mechanical Properties
Density
Density At Room Temperature
16.69 g/cm3
18
21.45 g/cm3
11
Density When Liquid (at m.p.)
15.00 g/cm3
9
19.77 g/cm3
2
Tensile Strength
Not Available
125.00 MPa
14
Viscosity
Not Available
Not Available
Vapor Pressure
Vapor Pressure at 2000 K
0.00 (Pa)
31
0.07 (Pa)
18
Elasticity properties
Shear Modulus
69.00 GPa
13
61.00 GPa
14
Bulk Modulus
200.00 GPa
8
230.00 GPa
6
Young's Modulus
186.00 GPa
13
168.00 GPa
14
Poisson Ratio
0.34
10
0.38
6
Other Mechanical Properties
Ductile
Ductile, Malleable
Magnetic Properties
Magnetic Characteristics
Specific Gravity
16.65
11
21.45
4
Magnetic Ordering
Paramagnetic
Paramagnetic
Permeability
Not Available
0.00 H/m
3
Electrical Properties
Electrical Property
Conductor
Conductor
Resistivity
131.00 nΩ·m
25
105.00 nΩ·m
30
Electrical Conductivity
0.08 106/cm Ω
27
0.10 106/cm Ω
21
Electron Affinity
31.00 kJ/mol
29
205.30 kJ/mol
2
Thermal Properties
Specific Heat
0.14 J/(kg K)
37
0.13 J/(kg K)
39
Molar Heat Capacity
25.36 J/mol·K
99+
25.86 J/mol·K
35
Thermal Conductivity
57.50 W/m·K
27
71.60 W/m·K
24
Critical Temperature
Not Available
Not Available
Thermal Expansion
6.30 µm/(m·K)
99+
8.80 µm/(m·K)
99+
Enthalpy
Enthalpy of Vaporization
753.10 kJ/mol
2
510.50 kJ/mol
11
Enthalpy of Fusion
31.40 kJ/mol
3
19.70 kJ/mol
12
Enthalpy of Atomization
782.00 kJ/mol
3
565.00 kJ/mol
11
Standard Molar Entropy
41.50 J/mol.K
37
41.60 J/mol.K
36
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