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Technetium vs Nickel

Technetium
Nickel
Nickel vs Technetium


Periodic Table
Symbol
Tc   
Ni   
Group Number
7   
11
10   
8
Period Number
5   
4   
Block
d block   
d block   
Element Family
Transition Metal   
Transition Metal   
CAS Number
7440268   
99+
7440020   
99+
Space Group Name
P63/mmc   
Fm_ 3m   
Space Group Number
194.00   
5
225.00   
2
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.
  • After iron, Zinc metal the second most abundant element in the earth crust.
  
Sources
Made by Bombarding Molybdenum with Deuterons   
Found in Minerals, Mining, Ores of Minerals   
History
  
  
Who Discovered
Emilio Segrè and Carlo Perriero   
Axel Fredrik Cronstedt   
Discovery
In 1937   
In 1751   
Abundance
  
  
Abundance In Universe
Not Available   
6 * 10-3 %   
4
Abundance In Sun
~-9999 %   
~0.008 %   
3
Abundance In Meteorites
Not Available   
1.30 %   
3
Abundance In Earth's Crust
Not Available   
0.01 %   
15
Abundance In Oceans
Not Available   
0.00 %   
13
Abundance In Humans
Not Available   
0.00 %   
14
Uses
Uses & Benefits
  • Technetium is a radioactive metal and hence it is used for medical studies and other research purposes.
  
  • It has corrosion resistance and hence it is used to plate other metals.
  • Its alloys are very useful; Nichrome alloy is used in the hot coil of toasters and electric oven.
  
Industrial Uses
NA   
Automobile Industry, Electrical Industry, Electronic Industry   
Medical Uses
NA   
NA   
Other Uses
Alloys, Nuclear Research, Research Purposes   
Alloys   
Biological Properties
  
  
Toxicity
Low Toxic   
Toxic   
Present in Human Body
No   
Yes   
In Blood
0.00 Blood/mg dm-3   
37
0.05 Blood/mg dm-3   
17
In Bone
0.00 p.p.m.   
36
0.70 p.p.m.   
18
Physical Properties
Melting Point
2,200.00 °C   
9
1,453.00 °C   
31
Boiling Point
4,877.00 °C   
7
2,732.00 °C   
38
Appearance
  
  
Physical State
Solid   
Solid   
Color
Shiny Gray   
Silver   
Luster
NA   
Metallic   
Hardness
  
  
Mohs Hardness
Not Available   
4.00   
10
Brinell Hardness
Not Available   
667.00 MPa   
18
Vickers Hardness
Not Available   
638.00 MPa   
16
Speed of Sound
16,200.00 m/s   
1
4,900.00 m/s   
12
Optical Properties
  
  
Reflectivity
Not Available   
72.00 %   
9
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
Tc   
Ni   
Isotopes
  
  
Known Isotopes
18   
21
25   
14
Electronegativity
  
  
Pauling Electronegativity
1.90   
11
1.91   
10
Sanderson Electronegativity
Not Available   
1.94   
10
Allred Rochow Electronegativity
1.36   
20
1.75   
3
Allen Electronegativity
1.51   
28
1.88   
6
Electropositivity
  
  
Pauling Electropositivity
2.10   
99+
2.09   
99+
Ionization Energies
  
  
1st Energy Level
702.00 kJ/mol   
36
737.10 kJ/mol   
25
2nd Energy Level
1,470.00 kJ/mol   
99+
1,753.00 kJ/mol   
25
3rd Energy Level
2,850.00 kJ/mol   
33
3,395.00 kJ/mol   
17
4th Energy Level
Not Available   
5,300.00 kJ/mol   
15
5th Energy Level
Not Available   
7,339.00 kJ/mol   
15
6th Energy Level
Not Available   
10,400.00 kJ/mol   
9
7th Energy level
Not Available   
12,800.00 kJ/mol   
10
8th Energy Level
Not Available   
15,600.00 kJ/mol   
10
9th Energy Level
Not Available   
18,600.00 kJ/mol   
10
10th Energy Level
Not Available   
21,670.00 kJ/mol   
14
11th Energy Level
Not Available   
30,970.00 kJ/mol   
7
12th Energy Level
Not Available   
34,000.00 kJ/mol   
7
13th Energy Level
Not Available   
37,100.00 kJ/mol   
7
14th Energy Level
Not Available   
41,500.00 kJ/mol   
8
15th Energy Level
Not Available   
44,800.00 kJ/mol   
10
16th Energy Level
Not Available   
48,100.00 kJ/mol   
12
17th Energy Level
Not Available   
55,101.00 kJ/mol   
11
18th Energy Level
Not Available   
58,570.00 kJ/mol   
12
19th Energy Level
Not Available   
148,700.00 kJ/mol   
1
20th Energy Level
Not Available   
159,000.00 kJ/mol   
3
21st Energy Level
Not Available   
169,400.00 kJ/mol   
3
22nd Energy Level
Not Available   
182,700.00 kJ/mol   
2
23rd Energy Level
Not Available   
194,000.00 kJ/mol   
2
Electrochemical Equivalent
0.52 g/amp-hr   
99+
1.10 g/amp-hr   
99+
Electron Work Function
Not Available   
5.15 eV   
2
Other Chemical Properties
Anti Corrosion, Ionization, Radioactive Isotopes, Radioactivity, Solubility   
Anti Corrosion, Ionization, Radioactive Isotopes   
Atomic Properties
Atomic Number
43   
99+
28   
99+
Electron Configuration
[Kr] 4d5 5s2   
[Ar] 3d8 4s2 Or [Ar] 3d9 4s1   
Crystal Structure
Hexagonal Close Packed (HCP)   
Face Centered Cubic (FCC)   
Crystal Lattice
HCP-Crystal-Structure-of-Technetium.jpg#100   
FCC-Crystal-Structure-of-Nickel.jpg#100   
Atom
  
  
Number of Protons
43   
99+
28   
99+
Number of Neutrons
55   
99+
31   
99+
Number of Electrons
43   
99+
28   
99+
Radius of an Atom
  
  
Atomic Radius
136.00 pm   
99+
124.00 pm   
99+
Covalent Radius
147.00 pm   
37
124.00 pm   
99+
Van der Waals Radius
200.00 pm   
28
163.00 pm   
40
Atomic Weight
98.00 amu   
99+
58.69 amu   
99+
Atomic Volume
8.50 cm3/mol   
99+
6.59 cm3/mol   
99+
Adjacent Atomic Numbers
  
  
Previous Element
Molybdenum
  
Cobalt
  
Next Element
Ruthenium
  
Copper
  
Valence Electron Potential
180.00 (-eV)   
3
42.00 (-eV)   
99+
Lattice Constant
273.50 pm   
99+
352.40 pm   
99+
Lattice Angles
π/2, π/2, 2 π/3   
π/2, π/2, π/2   
Lattice C/A Ratio
1.60   
5
Not Available   
Mechanical Properties
Density
  
  
Density At Room Temperature
11.00 g/cm3   
34
8.91 g/cm3   
99+
Density When Liquid (at m.p.)
Not Available   
7.81 g/cm3   
29
Tensile Strength
Not Available   
345.00 MPa   
11
Viscosity
Not Available   
Not Available   
Vapor Pressure
  
  
Vapor Pressure at 1000 K
Not Available   
0.00 (Pa)   
31
Vapor Pressure at 2000 K
Not Available   
19.50 (Pa)   
6
Elasticity properties
  
  
Shear Modulus
Not Available   
76.00 GPa   
12
Bulk Modulus
Not Available   
180.00 GPa   
9
Young's Modulus
Not Available   
200.00 GPa   
11
Poisson Ratio
Not Available   
0.31   
13
Other Mechanical Properties
NA   
Ductile   
Magnetic Properties
Magnetic Characteristics
  
  
Specific Gravity
11.50   
24
8.90   
33
Magnetic Ordering
Paramagnetic   
Ferromagnetic   
Permeability
Not Available   
0.00 H/m   
2
Susceptibility
Not Available   
600.00   
2
Electrical Properties
  
  
Electrical Property
Conductor   
Conductor   
Resistivity
200.00 nΩ·m   
18
69.30 nΩ·m   
39
Electrical Conductivity
0.07 106/cm Ω   
30
0.14 106/cm Ω   
13
Electron Affinity
53.00 kJ/mol   
18
112.00 kJ/mol   
6
Thermal Properties
Specific Heat
0.21 J/(kg K)   
29
0.44 J/(kg K)   
13
Molar Heat Capacity
24.27 J/mol·K   
99+
26.07 J/mol·K   
31
Thermal Conductivity
50.60 W/m·K   
30
90.90 W/m·K   
18
Critical Temperature
Not Available   
Not Available   
Thermal Expansion
7.10 µm/(m·K)   
99+
13.40 µm/(m·K)   
28
Enthalpy
  
  
Enthalpy of Vaporization
660.00 kJ/mol   
6
371.80 kJ/mol   
20
Enthalpy of Fusion
23.01 kJ/mol   
9
17.57 kJ/mol   
14
Enthalpy of Atomization
649.00 kJ/mol   
8
422.60 kJ/mol   
17
Standard Molar Entropy
181.10 J/mol.K   
2
29.90 J/mol.K   
99+
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