Tantalum vs Silver
Periodic Table
Symbol
Ta
Ag
Group Number
5
13
11
7
Period Number
6
5
Block
d block
d block
Element Family
Transition Metal
Transition Metal
CAS Number
7440257
99+
7440224
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.
- It is the most reflective element.
- Silver is the second most ductile metal after Gold.
- It is also used in Dentistry as a dental alloys for clips and crowning.
Sources
Found in Minerals, Mining, Ores of Minerals
Earth's crust, Found in Minerals, Ores of metals
History
Who Discovered
Anders Gustaf Ekeberg
Unknown
Discovery
In 1802
Before 5000 BC
Abundance
Abundance In Universe
8 * 10-9 %
31
6 * 10-8 %
26
Abundance In Sun
~-9999 %
~0.0000001 %
26
Abundance In Meteorites
0.00 %
99+
0.00 %
38
Abundance In Earth's Crust
0.00 %
37
0.00 %
99+
Abundance In Oceans
0.00 %
31
0.00 %
19
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.
- Silver is mainly used for Jewelry and show piece.
- It is used for manufacturing high quality mirrors due to its reflectivity property.
Industrial Uses
Electrical Industry, Electronic Industry
Chemical Industry, Clothing Industry, Electrical Industry
Medical Uses
NA
Dentistry, Pharmaceutical Industry
Other Uses
Alloys
Alloys, Bullion, Coinage, Jewellery, Sculptures, Statues
Biological Properties
Toxicity
Low Toxic
Non Toxic
Present in Human Body
Yes
Yes
In Blood
Not Available
0.00 Blood/mg dm-3
29
In Bone
0.03 p.p.m.
28
0.44 p.p.m.
20
Physical Properties
Melting Point
2,996.00 °C
4
961.93 °C
99+
Boiling Point
5,425.00 °C
4
2,212.00 °C
99+
Appearance
Physical State
Solid
Solid
Color
Gray Blue
Silvery White
Luster
Metallic
Metallic
Hardness
Mohs Hardness
6.50
5
2.50
14
Brinell Hardness
440.00 MPa
28
251.00 MPa
37
Vickers Hardness
870.00 MPa
12
229.00 MPa
30
Speed of Sound
3,400.00 m/s
22
2,680.00 m/s
34
Optical Properties
Reflectivity
78.00 %
6
97.00 %
1
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
Ag
Isotopes
Known Isotopes
31
8
36
3
Electronegativity
Pauling Electronegativity
1.50
27
1.93
9
Sanderson Electronegativity
Not Available
1.83
11
Allred Rochow Electronegativity
1.33
22
1.42
18
Mulliken-Jaffe Electronegativity
Not Available
1.47
15
Allen Electronegativity
1.34
33
1.87
7
Electropositivity
Pauling Electropositivity
2.50
27
2.07
99+
Ionization Energies
1st Energy Level
761.00 kJ/mol
18
731.00 kJ/mol
27
2nd Energy Level
1,500.00 kJ/mol
40
2,070.00 kJ/mol
11
3rd Energy Level
Not Available
3,361.00 kJ/mol
19
Electrochemical Equivalent
1.35 g/amp-hr
99+
4.02 g/amp-hr
7
Electron Work Function
4.25 eV
21
4.26 eV
20
Other Chemical Properties
Anti Corrosion, Ionization, Radioactive Isotopes, Radioactivity, Solubility
Chemical Stability, Ionization, Solubility
Atomic Properties
Atomic Number
73
99+
47
99+
Electron Configuration
[Xe] 4f14 5d3 6s2
[Kr] 4d10 5s1
Crystal Structure
Body Centered Cubic (BCC)
Face Centered Cubic (FCC)
Crystal Lattice
BCC-Crystal-Structure-.jpg#100
FCC-Crystal-Structure-of-Silver.jpg#100
Atom
Number of Protons
73
99+
47
99+
Number of Neutrons
108
28
61
99+
Number of Electrons
73
99+
47
99+
Radius of an Atom
Atomic Radius
146.00 pm
35
144.00 pm
36
Covalent Radius
170.00 pm
25
145.00 pm
39
Van der Waals Radius
200.00 pm
28
172.00 pm
38
Atomic Weight
180.95 amu
38
107.87 amu
99+
Atomic Volume
10.90 cm3/mol
99+
10.30 cm3/mol
99+
Adjacent Atomic Numbers
Valence Electron Potential
110.00 (-eV)
7
11.40 (-eV)
99+
Lattice Constant
330.13 pm
99+
408.53 pm
20
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
10.49 g/cm3
35
Density When Liquid (at m.p.)
15.00 g/cm3
9
9.32 g/cm3
21
Tensile Strength
Not Available
Not Available
Viscosity
Not Available
Not Available
Vapor Pressure
Vapor Pressure at 1000 K
Not Available
0.00 (Pa)
14
Vapor Pressure at 2000 K
0.00 (Pa)
31
Not Available
Elasticity properties
Shear Modulus
69.00 GPa
13
30.00 GPa
23
Bulk Modulus
200.00 GPa
8
100.00 GPa
16
Young's Modulus
186.00 GPa
13
83.00 GPa
23
Poisson Ratio
0.34
10
0.37
7
Other Mechanical Properties
Ductile
Ductile, Malleable
Magnetic Properties
Magnetic Characteristics
Specific Gravity
16.65
11
10.50
26
Magnetic Ordering
Paramagnetic
Diamagnetic
Susceptibility
Not Available
0.00
5
Electrical Properties
Electrical Property
Conductor
Conductor
Resistivity
131.00 nΩ·m
25
15.87 nΩ·m
99+
Electrical Conductivity
0.08 106/cm Ω
27
0.63 106/cm Ω
1
Electron Affinity
31.00 kJ/mol
29
125.60 kJ/mol
5
Thermal Properties
Specific Heat
0.14 J/(kg K)
37
0.24 J/(kg K)
25
Molar Heat Capacity
25.36 J/mol·K
99+
25.35 J/mol·K
99+
Thermal Conductivity
57.50 W/m·K
27
429.00 W/m·K
1
Critical Temperature
Not Available
Not Available
Thermal Expansion
6.30 µm/(m·K)
99+
18.90 µm/(m·K)
23
Enthalpy
Enthalpy of Vaporization
753.10 kJ/mol
2
255.10 kJ/mol
37
Enthalpy of Fusion
31.40 kJ/mol
3
11.30 kJ/mol
31
Enthalpy of Atomization
782.00 kJ/mol
3
284.50 kJ/mol
37
Standard Molar Entropy
41.50 J/mol.K
37
42.60 J/mol.K
35
|
||
|
||
|
