Tantalum vs Indium
Periodic Table
Symbol
Ta
In
Group Number
5
13
13
5
Period Number
6
5
Block
d block
p block
Element Family
Transition Metal
Post-Transition
CAS Number
7440257
99+
7440746
17
Space Group Name
Im_ 3m
I4/mmm
Space Group Number
229.00
1
139.00
8
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.
- Luster of Indium is bright in nature.
- Reich and richer were looking for thallium in zinc metal and they discovered Indium metal.
Sources
Found in Minerals, Mining, Ores of Minerals
Mining, Ores of metals
History
Who Discovered
Anders Gustaf Ekeberg
Ferdinand Reich and Hieronymous Theodor Richter
Discovery
In 1802
In 1863
Abundance
Abundance In Universe
8 * 10-9 %
31
3 * 10-8 %
28
Abundance In Sun
~-9999 %
~0.0000004 %
23
Abundance In Meteorites
0.00 %
99+
0.00 %
99+
Abundance In Earth's Crust
0.00 %
37
0.00 %
99+
Abundance In Oceans
0.00 %
31
0.00 %
99+
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.
- It is used to produce indium tin oxide (ITO), it is used in manufacturing touch screens, flat screen TVs and solar panels.
- Its nitride, phosphide and antimonide are used in transistors and microchips.
Industrial Uses
Electrical Industry, Electronic Industry
Aerospace Industry, Automobile Industry
Medical Uses
NA
Medical Research
Other Uses
Alloys
Alloys, In Nuclear Reactors
Biological Properties
Toxicity
Low Toxic
Non Toxic
Present in Human Body
Yes
Yes
In Bone
0.03 p.p.m.
28
Not Available
Physical Properties
Melting Point
2,996.00 °C
4
156.61 °C
99+
Boiling Point
5,425.00 °C
4
2,000.00 °C
99+
Appearance
Physical State
Solid
Solid
Color
Gray Blue
Silvery Gray
Luster
Metallic
Lustrous
Hardness
Mohs Hardness
6.50
5
1.20
20
Brinell Hardness
440.00 MPa
28
8.80 MPa
99+
Vickers Hardness
870.00 MPa
12
Not Available
Speed of Sound
3,400.00 m/s
22
1,215.00 m/s
99+
Optical Properties
Reflectivity
78.00 %
6
Not Available
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
In
Isotopes
Known Isotopes
31
8
35
4
Electronegativity
Pauling Electronegativity
1.50
27
1.78
16
Sanderson Electronegativity
Not Available
2.14
8
Allred Rochow Electronegativity
1.33
22
1.49
13
Mulliken-Jaffe Electronegativity
Not Available
1.76
10
Allen Electronegativity
1.34
33
1.66
18
Electropositivity
Pauling Electropositivity
2.50
27
2.22
38
Ionization Energies
1st Energy Level
761.00 kJ/mol
18
558.30 kJ/mol
99+
2nd Energy Level
1,500.00 kJ/mol
40
1,820.70 kJ/mol
18
3rd Energy Level
Not Available
2,704.00 kJ/mol
39
4th Energy Level
Not Available
5,210.00 kJ/mol
17
Electrochemical Equivalent
1.35 g/amp-hr
99+
1.43 g/amp-hr
99+
Electron Work Function
4.25 eV
21
4.12 eV
24
Other Chemical Properties
Anti Corrosion, Ionization, Radioactive Isotopes, Radioactivity, Solubility
Ionization, Radioactive Isotopes, Radioactivity, Solubility
Atomic Properties
Atomic Number
73
99+
49
99+
Electron Configuration
[Xe] 4f14 5d3 6s2
[Kr] 4d10 5s2 5p1
Crystal Structure
Body Centered Cubic (BCC)
Tetragonal (TETR)
Crystal Lattice
BCC-Crystal-Structure-.jpg#100
TETR-Crystal-Structure-of-Indium.jpg#100
Atom
Number of Protons
73
99+
49
99+
Number of Neutrons
108
28
66
99+
Number of Electrons
73
99+
49
99+
Radius of an Atom
Atomic Radius
146.00 pm
35
167.00 pm
24
Covalent Radius
170.00 pm
25
142.00 pm
99+
Van der Waals Radius
200.00 pm
28
193.00 pm
31
Atomic Weight
180.95 amu
38
114.82 amu
99+
Atomic Volume
10.90 cm3/mol
99+
15.70 cm3/mol
33
Adjacent Atomic Numbers
Valence Electron Potential
110.00 (-eV)
7
54.00 (-eV)
25
Lattice Constant
330.13 pm
99+
325.23 pm
99+
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
7.31 g/cm3
99+
Density When Liquid (at m.p.)
15.00 g/cm3
9
7.02 g/cm3
33
Tensile Strength
Not Available
2.50 MPa
21
Viscosity
Not Available
Not Available
Vapor Pressure
Vapor Pressure at 1000 K
Not Available
0.01 (Pa)
11
Vapor Pressure at 2000 K
0.00 (Pa)
31
Not Available
Elasticity properties
Shear Modulus
69.00 GPa
13
Not Available
Bulk Modulus
200.00 GPa
8
Not Available
Young's Modulus
186.00 GPa
13
11.00 GPa
99+
Poisson Ratio
0.34
10
Not Available
Other Mechanical Properties
Ductile
Ductile, Malleable
Magnetic Properties
Magnetic Characteristics
Specific Gravity
16.65
11
7.31
99+
Magnetic Ordering
Paramagnetic
Diamagnetic
Electrical Properties
Electrical Property
Conductor
Conductor
Resistivity
131.00 nΩ·m
25
83.70 nΩ·m
34
Electrical Conductivity
0.08 106/cm Ω
27
0.12 106/cm Ω
17
Electron Affinity
31.00 kJ/mol
29
28.90 kJ/mol
31
Thermal Properties
Specific Heat
0.14 J/(kg K)
37
0.23 J/(kg K)
27
Molar Heat Capacity
25.36 J/mol·K
99+
26.74 J/mol·K
25
Thermal Conductivity
57.50 W/m·K
27
81.80 W/m·K
21
Critical Temperature
Not Available
Not Available
Thermal Expansion
6.30 µm/(m·K)
99+
32.10 µm/(m·K)
9
Enthalpy
Enthalpy of Vaporization
753.10 kJ/mol
2
226.40 kJ/mol
40
Enthalpy of Fusion
31.40 kJ/mol
3
3.28 kJ/mol
99+
Enthalpy of Atomization
782.00 kJ/mol
3
242.70 kJ/mol
99+
Standard Molar Entropy
41.50 J/mol.K
37
57.80 J/mol.K
22
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