Home
 Compare Metals

Silver vs Technetium

Silver
Technetium
Technetium vs Silver


Periodic Table
Symbol
Ag  
Tc  
Group Number
11  
7
7  
11
Period Number
5  
5  
Block
d block  
d block  
Element Family
Transition Metal  
Transition Metal  
CAS Number
7440224  
99+
7440268  
99+
Space Group Name
Fm_ 3m  
P63/mmc  
Space Group Number
225.00  
3
194.00  
7
Facts
Interesting Facts
  • 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.
  
  • Original name of Technetium was Masurium.
  • At the time of its discovery it found in sample of Molybdenum.
  
Sources
Earth's crust, Found in Minerals, Ores of metals  
Made by Bombarding Molybdenum with Deuterons  
History
  
  
Who Discovered
-  
Emilio Segrè and Carlo Perriero  
Discovery
Before 5000 BC  
In 1937  
Abundance
  
  
Abundance In Universe
0.00 %  
27
0.00 %  
40
Abundance In Sun
0.00 %  
26
0.00 %  
18
Abundance In Meteorites
0.00 %  
38
-  
Abundance In Earth's Crust
0.00 %  
99+
0.00 %  
99+
Abundance In Oceans
0.00 %  
19
-  
Abundance In Humans
0.00 %  
24
-  
Uses
Uses & Benefits
  • Silver is mainly used for Jewelry and show piece.
  • It is used for manufacturing high quality mirrors due to its reflectivity property.
  
  • Technetium is a radioactive metal and hence it is used for medical studies and other research purposes.
  
Industrial Uses
Chemical Industry, Clothing Industry, Electrical Industry  
-  
Medical Uses
Dentistry, Pharmaceutical Industry  
-  
Other Uses
Alloys, Bullion, Coinage, Jewellery, Sculptures, Statues  
Alloys, Nuclear Research, Research Purposes  
Biological Properties
  
  
Toxicity
Non Toxic  
Low Toxic  
Present in Human Body
Yes  
No  
In Blood
0.00 Blood/mg dm-3  
29
0.00 Blood/mg dm-3  
40
In Bone
0.44 p.p.m.  
24
0.00 p.p.m.  
99+
Physical
Melting Point
961.93 °C  
99+
2,200.00 °C  
9
Boiling Point
2,212.00 °C  
99+
4,877.00 °C  
7
Appearance
  
  
Physical State
Solid  
Solid  
Color
Silvery White  
Shiny Gray  
Luster
Metallic  
-  
Hardness
  
  
Mohs Hardness
2.50  
15
2.25  
16
Brinell Hardness
251.00 MPa  
99+
550.00 MPa  
27
Vickers Hardness
229.00 MPa  
99+
500.00 MPa  
35
Speed of Sound
2,680.00 m/s  
99+
16,200.00 m/s  
1
Optical Properties
  
  
Refractive Index
0.16  
99+
1.90  
18
Reflectivity
97.00 %  
1
35.00 %  
34
Allotropes
No  
No  
α Allotropes
-  
-  
β Allotropes
-  
-  
γ Allotropes
-  
-  
Chemical
Chemical Formula
Ag  
Tc  
Isotopes
  
  
Known Isotopes
36  
3
18  
21
Electronegativity
  
  
Pauling Electronegativity
1.93  
10
1.90  
12
Sanderson Electronegativity
1.83  
14
1.90  
13
Allred Rochow Electronegativity
1.42  
19
1.36  
21
Mulliken-Jaffe Electronegativity
1.47  
28
1.90  
13
Allen Electronegativity
1.87  
10
1.51  
31
Electropositivity
  
  
Pauling Electropositivity
2.07  
99+
2.10  
99+
Ionization Energies
  
  
1st Energy Level
731.00 kJ/mol  
27
702.00 kJ/mol  
36
2nd Energy Level
2,070.00 kJ/mol  
11
1,470.00 kJ/mol  
99+
3rd Energy Level
3,361.00 kJ/mol  
19
2,850.00 kJ/mol  
34
4th Energy Level
7,310.00 kJ/mol  
10
7,020.00 kJ/mol  
14
5th Energy Level
7,310.00 kJ/mol  
24
7,020.00 kJ/mol  
28
6th Energy Level
7,310.00 kJ/mol  
39
7,020.00 kJ/mol  
99+
7th Energy level
7,310.00 kJ/mol  
33
4,700.00 kJ/mol  
99+
8th Energy Level
7,310.00 kJ/mol  
31
4,700.00 kJ/mol  
99+
9th Energy Level
7,310.00 kJ/mol  
27
7,020.00 kJ/mol  
35
10th Energy Level
7,310.00 kJ/mol  
32
7,020.00 kJ/mol  
39
11th Energy Level
7,310.00 kJ/mol  
31
7,020.00 kJ/mol  
37
12th Energy Level
7,310.00 kJ/mol  
99+
7,020.00 kJ/mol  
99+
13th Energy Level
7,310.00 kJ/mol  
25
7,020.00 kJ/mol  
33
14th Energy Level
731.00 kJ/mol  
99+
7,020.00 kJ/mol  
23
15th Energy Level
73,100.00 kJ/mol  
22
70,200.00 kJ/mol  
29
16th Energy Level
73,100.00 kJ/mol  
17
70,200.00 kJ/mol  
24
17th Energy Level
731.00 kJ/mol  
38
702.50 kJ/mol  
99+
18th Energy Level
7,310.00 kJ/mol  
28
7,020.00 kJ/mol  
35
19th Energy Level
731.00 kJ/mol  
35
702.00 kJ/mol  
99+
20th Energy Level
731.00 kJ/mol  
29
702.00 kJ/mol  
35
21st Energy Level
731.00 kJ/mol  
99+
702.00 kJ/mol  
99+
22nd Energy Level
731.00 kJ/mol  
23
702.00 kJ/mol  
29
23rd Energy Level
731.00 kJ/mol  
99+
702.00 kJ/mol  
99+
24th Energy Level
731.00 kJ/mol  
22
702.50 kJ/mol  
28
25th Energy Level
731.00 kJ/mol  
22
702.00 kJ/mol  
30
26th Energy Level
731.00 kJ/mol  
22
702.00 kJ/mol  
29
27th Energy Level
731.00 kJ/mol  
21
702.00 kJ/mol  
30
28th Energy Level
731.00 kJ/mol  
27
702.00 kJ/mol  
35
29th Energy Level
731.00 kJ/mol  
28
702.00 kJ/mol  
36
30th Energy Level
731.00 kJ/mol  
22
702.00 kJ/mol  
30
Electrochemical Equivalent
4.02 g/amp-hr  
7
0.52 g/amp-hr  
99+
Electron Work Function
4.26 eV  
27
4.90 eV  
12
Other Chemical Properties
Chemical Stability, Ionization, Solubility  
Anti Corrosion, Ionization, Radioactive Isotopes, Radioactivity, Solubility  
Atomic
Atomic Number
47  
99+
43  
99+
Electron Configuration
[Kr] 4d10 5s1  
[Kr] 4d5 5s2  
Crystal Structure
Face Centered Cubic (FCC)  
Hexagonal Close Packed (HCP)  
Crystal Lattice
FCC-Crystal-Structure-of-Silver.jpg#100  
HCP-Crystal-Structure-of-Technetium.jpg#100  
Atom
  
  
Number of Protons
47  
99+
43  
99+
Number of Neutrons
61  
99+
55  
99+
Number of Electrons
47  
99+
43  
99+
Radius of an Atom
  
  
Atomic Radius
144.00 pm  
38
136.00 pm  
99+
Covalent Radius
145.00 pm  
99+
147.00 pm  
39
Van der Waals Radius
172.00 pm  
99+
200.00 pm  
35
Atomic Weight
107.87 amu  
99+
98.00 amu  
99+
Atomic Volume
10.30 cm3/mol  
99+
8.50 cm3/mol  
99+
Adjacent Atomic Numbers
  
  
Previous Element
Palladium
  
Molybdenum
  
Next Element
Cadmium
  
Ruthenium
  
Valence Electron Potential
11.40 (-eV)  
99+
180.00 (-eV)  
3
Lattice Constant
408.53 pm  
23
273.50 pm  
99+
Lattice Angles
π/2, π/2, π/2  
π/2, π/2, 2 π/3  
Lattice C/A Ratio
1.59  
26
1.60  
21
Mechanical
Density
  
  
Density At Room Temperature
10.49 g/cm3  
37
11.00 g/cm3  
36
Density When Liquid (at m.p.)
9.32 g/cm3  
99+
11.00 g/cm3  
34
Tensile Strength
170.00 MPa  
21
50.00 MPa  
38
Viscosity
0.00  
23
0.00  
25
Vapor Pressure
  
  
Vapor Pressure at 1000 K
0.00 (Pa)  
14
0.00 (Pa)  
37
Vapor Pressure at 2000 K
0.00 (Pa)  
38
0.00 (Pa)  
99+
Elasticity properties
  
  
Shear Modulus
30.00 GPa  
27
27.00 GPa  
34
Bulk Modulus
100.00 GPa  
16
100.00 GPa  
16
Young's Modulus
83.00 GPa  
25
50.00 GPa  
39
Poisson Ratio
0.37  
7
0.38  
6
Other Mechanical Properties
Ductile, Malleable  
-  
Magnetic
Magnetic Characteristics
  
  
Specific Gravity
10.50  
39
11.50  
37
Magnetic Ordering
Diamagnetic  
Paramagnetic  
Permeability
0.00 H/m  
17
0.00 H/m  
17
Susceptibility
0.00  
32
0.00  
24
Electrical Properties
  
  
Electrical Property
Conductor  
Conductor  
Resistivity
15.87 nΩ·m  
99+
200.00 nΩ·m  
18
Electrical Conductivity
0.63 106/cm Ω  
1
0.07 106/cm Ω  
35
Electron Affinity
125.60 kJ/mol  
5
53.00 kJ/mol  
23
Thermal
Specific Heat
0.24 J/(kg K)  
25
0.21 J/(kg K)  
30
Molar Heat Capacity
25.35 J/mol·K  
99+
24.27 J/mol·K  
99+
Thermal Conductivity
429.00 W/m·K  
1
50.60 W/m·K  
30
Critical Temperature
1,235.00 K  
99+
2,150.00 K  
16
Thermal Expansion
18.90 µm/(m·K)  
25
7.10 µm/(m·K)  
99+
Enthalpy
  
  
Enthalpy of Vaporization
255.10 kJ/mol  
99+
660.00 kJ/mol  
7
Enthalpy of Fusion
11.30 kJ/mol  
37
23.01 kJ/mol  
9
Enthalpy of Atomization
284.50 kJ/mol  
99+
649.00 kJ/mol  
9
Standard Molar Entropy
42.60 J/mol.K  
99+
181.10 J/mol.K  
2
Periodic Table >>
<< All

Compare Transition Metals

Transition Metals

Transition Metals

» More Transition Metals

Compare Transition Metals

» More Compare Transition Metals
Home | About | Contact | Disclaimer | Terms of use
© A softusvista inc. venture!