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Technetium vs Zinc

Technetium
Zinc
Zinc vs Technetium


Periodic Table
Symbol
Tc  
Zn  
Group Number
7  
11
12  
6
Period Number
5  
4  
Block
d block  
d block  
Element Family
Transition Metal  
Transition Metal  
CAS Number
7440268  
99+
7440666  
24
Space Group Name
P63/mmc  
P63/mmc  
Space Group Number
194.00  
7
194.00  
7
Facts
Interesting Facts
  • Original name of Technetium was Masurium.
  • At the time of its discovery it found in sample of Molybdenum.
  
  • Zinc metal found (obtain) in many forms like granules, foil, dust and in a powder form.
  • The leading producers of Zinc metal are Australia, Canada, China, U.S.A and Peru.
  
Sources
Made by Bombarding Molybdenum with Deuterons  
Earth's crust, Found in Minerals, Mining, Ores of Minerals  
History
  
  
Who Discovered
Emilio Segrè and Carlo Perriero  
Indian metallurgists  
Discovery
In 1937  
Before 1000 BCE  
Abundance
  
  
Abundance In Universe
0.00 %  
40
0.00 %  
12
Abundance In Sun
0.00 %  
18
0.00 %  
10
Abundance In Meteorites
-  
0.02 %  
12
Abundance In Earth's Crust
0.00 %  
99+
0.01 %  
16
Abundance In Oceans
-  
0.00 %  
10
Abundance In Humans
-  
0.00 %  
7
Uses
Uses & Benefits
  • Technetium is a radioactive metal and hence it is used for medical studies and other research purposes.
  
  • It is mainly used for Galvanizing other metals.
  • It is also used for manufacturing die-casting and it is very essential for automobile industry.
  
Industrial Uses
-  
Electrical Industry, Electronic Industry  
Medical Uses
-  
Pharmaceutical Industry  
Other Uses
Alloys, Nuclear Research, Research Purposes  
Alloys  
Biological Properties
  
  
Toxicity
Low Toxic  
Highly Toxic  
Present in Human Body
No  
Yes  
In Blood
0.00 Blood/mg dm-3  
40
7.00 Blood/mg dm-3  
6
In Bone
0.00 p.p.m.  
99+
170.00 p.p.m.  
6
Physical
Melting Point
2,200.00 °C  
9
419.58 °C  
99+
Boiling Point
4,877.00 °C  
7
907.00 °C  
99+
Appearance
  
  
Physical State
Solid  
Solid  
Color
Shiny Gray  
Silvery Gray  
Luster
-  
Metallic  
Hardness
  
  
Mohs Hardness
2.25  
16
2.50  
15
Brinell Hardness
550.00 MPa  
27
327.00 MPa  
39
Vickers Hardness
500.00 MPa  
35
207.00 MPa  
99+
Speed of Sound
16,200.00 m/s  
1
3,850.00 m/s  
25
Optical Properties
  
  
Refractive Index
1.90  
18
1.00  
99+
Reflectivity
35.00 %  
34
80.00 %  
7
Allotropes
No  
No  
α Allotropes
-  
-  
β Allotropes
-  
-  
γ Allotropes
-  
-  
Chemical
Chemical Formula
Tc  
Zn  
Isotopes
  
  
Known Isotopes
18  
21
25  
14
Electronegativity
  
  
Pauling Electronegativity
1.90  
12
1.65  
20
Sanderson Electronegativity
1.90  
13
2.23  
7
Allred Rochow Electronegativity
1.36  
21
1.66  
8
Mulliken-Jaffe Electronegativity
1.90  
13
1.65  
20
Allen Electronegativity
1.51  
31
1.59  
25
Electropositivity
  
  
Pauling Electropositivity
2.10  
99+
2.35  
35
Ionization Energies
  
  
1st Energy Level
702.00 kJ/mol  
36
906.40 kJ/mol  
6
2nd Energy Level
1,470.00 kJ/mol  
99+
1,733.30 kJ/mol  
28
3rd Energy Level
2,850.00 kJ/mol  
34
3,833.00 kJ/mol  
12
4th Energy Level
7,020.00 kJ/mol  
14
5,731.00 kJ/mol  
20
5th Energy Level
7,020.00 kJ/mol  
28
7,970.00 kJ/mol  
15
6th Energy Level
7,020.00 kJ/mol  
99+
10,400.00 kJ/mol  
15
7th Energy level
4,700.00 kJ/mol  
99+
12,900.00 kJ/mol  
9
8th Energy Level
4,700.00 kJ/mol  
99+
16,800.00 kJ/mol  
6
9th Energy Level
7,020.00 kJ/mol  
35
19,600.00 kJ/mol  
8
10th Energy Level
7,020.00 kJ/mol  
39
23,000.00 kJ/mol  
10
11th Energy Level
7,020.00 kJ/mol  
37
26,400.00 kJ/mol  
11
12th Energy Level
7,020.00 kJ/mol  
99+
29,990.00 kJ/mol  
33
13th Energy Level
7,020.00 kJ/mol  
33
40,490.00 kJ/mol  
5
14th Energy Level
7,020.00 kJ/mol  
23
43,800.00 kJ/mol  
6
15th Energy Level
70,200.00 kJ/mol  
29
47,300.00 kJ/mol  
99+
16th Energy Level
70,200.00 kJ/mol  
24
52,300.00 kJ/mol  
99+
17th Energy Level
702.50 kJ/mol  
99+
55,900.00 kJ/mol  
10
18th Energy Level
7,020.00 kJ/mol  
35
59,700.00 kJ/mol  
11
19th Energy Level
702.00 kJ/mol  
99+
67,300.00 kJ/mol  
10
20th Energy Level
702.00 kJ/mol  
35
171,200.00 kJ/mol  
1
21st Energy Level
702.00 kJ/mol  
99+
179,100.00 kJ/mol  
1
22nd Energy Level
702.00 kJ/mol  
29
906.00 kJ/mol  
9
23rd Energy Level
702.00 kJ/mol  
99+
906.40 kJ/mol  
37
24th Energy Level
702.50 kJ/mol  
28
906.40 kJ/mol  
5
25th Energy Level
702.00 kJ/mol  
30
906.40 kJ/mol  
4
26th Energy Level
702.00 kJ/mol  
29
906.40 kJ/mol  
4
27th Energy Level
702.00 kJ/mol  
30
906.40 kJ/mol  
3
28th Energy Level
702.00 kJ/mol  
35
906.40 kJ/mol  
6
29th Energy Level
702.00 kJ/mol  
36
906.40 kJ/mol  
7
30th Energy Level
702.00 kJ/mol  
30
906.40 kJ/mol  
4
Electrochemical Equivalent
0.52 g/amp-hr  
99+
1.22 g/amp-hr  
99+
Electron Work Function
4.90 eV  
12
4.33 eV  
24
Other Chemical Properties
Anti Corrosion, Ionization, Radioactive Isotopes, Radioactivity, Solubility  
Anti Corrosion, Chemical Stability, Ionization, Radioactive Isotopes  
Atomic
Atomic Number
43  
99+
30  
99+
Electron Configuration
[Kr] 4d5 5s2  
[Ar] 3d10 4s2  
Crystal Structure
Hexagonal Close Packed (HCP)  
Hexagonal Close Packed (HCP)  
Crystal Lattice
HCP-Crystal-Structure-of-Technetium.jpg#100  
HCP-Crystal-Structure-of-Zinc.jpg#100  
Atom
  
  
Number of Protons
43  
99+
30  
99+
Number of Neutrons
55  
99+
35  
99+
Number of Electrons
43  
99+
30  
99+
Radius of an Atom
  
  
Atomic Radius
136.00 pm  
99+
134.00 pm  
99+
Covalent Radius
147.00 pm  
39
122.00 pm  
99+
Van der Waals Radius
200.00 pm  
35
139.00 pm  
99+
Atomic Weight
98.00 amu  
99+
65.38 amu  
99+
Atomic Volume
8.50 cm3/mol  
99+
9.20 cm3/mol  
99+
Adjacent Atomic Numbers
  
  
Previous Element
Molybdenum
  
Copper
  
Next Element
Ruthenium
  
Gallium
  
Valence Electron Potential
180.00 (-eV)  
3
38.90 (-eV)  
99+
Lattice Constant
273.50 pm  
99+
266.49 pm  
99+
Lattice Angles
π/2, π/2, 2 π/3  
π/2, π/2, 2 π/3  
Lattice C/A Ratio
1.60  
21
1.86  
4
Mechanical
Density
  
  
Density At Room Temperature
11.00 g/cm3  
36
7.14 g/cm3  
99+
Density When Liquid (at m.p.)
11.00 g/cm3  
34
6.57 g/cm3  
99+
Tensile Strength
50.00 MPa  
38
120.00 MPa  
27
Viscosity
0.00  
25
0.00  
7
Vapor Pressure
  
  
Vapor Pressure at 1000 K
0.00 (Pa)  
37
0.00 (Pa)  
37
Vapor Pressure at 2000 K
0.00 (Pa)  
99+
0.00 (Pa)  
37
Elasticity properties
  
  
Shear Modulus
27.00 GPa  
34
43.00 GPa  
18
Bulk Modulus
100.00 GPa  
16
70.00 GPa  
20
Young's Modulus
50.00 GPa  
39
108.00 GPa  
21
Poisson Ratio
0.38  
6
0.25  
24
Other Mechanical Properties
-  
-  
Magnetic
Magnetic Characteristics
  
  
Specific Gravity
11.50  
37
6.90  
99+
Magnetic Ordering
Paramagnetic  
Diamagnetic  
Permeability
0.00 H/m  
17
0.00 H/m  
16
Susceptibility
0.00  
24
0.00  
6
Electrical Properties
  
  
Electrical Property
Conductor  
Conductor  
Resistivity
200.00 nΩ·m  
18
59.00 nΩ·m  
40
Electrical Conductivity
0.07 106/cm Ω  
35
0.17 106/cm Ω  
12
Electron Affinity
53.00 kJ/mol  
23
0.00 kJ/mol  
99+
Thermal
Specific Heat
0.21 J/(kg K)  
30
0.39 J/(kg K)  
14
Molar Heat Capacity
24.27 J/mol·K  
99+
25.47 J/mol·K  
99+
Thermal Conductivity
50.60 W/m·K  
30
116.00 W/m·K  
14
Critical Temperature
2,150.00 K  
16
692.00 K  
99+
Thermal Expansion
7.10 µm/(m·K)  
99+
30.20 µm/(m·K)  
11
Enthalpy
  
  
Enthalpy of Vaporization
660.00 kJ/mol  
7
7.32 kJ/mol  
99+
Enthalpy of Fusion
23.01 kJ/mol  
9
7.32 kJ/mol  
99+
Enthalpy of Atomization
649.00 kJ/mol  
9
129.70 kJ/mol  
99+
Standard Molar Entropy
181.10 J/mol.K  
2
41.60 J/mol.K  
99+
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