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Lithium Technetium Comparison


Technetium Lithium comparison


Periodic Table

Symbol
Li   
Tc   

Group Number
1   
17
7   
11

Period Number
2   
5   

Block
s block   
d block   

Element Family
Alkali   
Transition Metal   

CAS Number
7439932   
99+
7440268   
99+

Space Group Name
Im_ 3m   
P63/mmc   

Space Group Number
229.00   
1
194.00   
5

Facts

Interesting Facts
  • Heat capacity of Lithium is very high.
  • Lithium inflammable and highly explosive metal, hence it has to be stored properly.
  
  • Original name of Technetium was Masurium.
  • At the time of its discovery it found in sample of Molybdenum.
  

Sources
Found in Minerals, Mining   
Made by Bombarding Molybdenum with Deuterons   

History
  
  

Who Discovered
Johan August Arfwedson   
Emilio Segrè and Carlo Perriero   

Discovery
In 1817   
In 1937   

Abundance
  
  

Abundance In Universe
6 * 10-7 %   
18
Not Available   

Abundance In Sun
~0.00017 %   
11
~-9999 %   

Abundance In Meteorites
0.00 %   
22
Not Available   

Abundance In Earth's Crust
0.00 %   
99+
Not Available   

Abundance In Oceans
0.00 %   
15
Not Available   

Abundance In Humans
0.00 %   
16
Not Available   

Uses

Uses & Benefits
  • The main usage of Lithium is manufacturing rechargeable batteries for electronic equipment and gadgets.
  • it is also used in manufacturing non-rechargeable batteries.
  
  • Technetium is a radioactive metal and hence it is used for medical studies and other research purposes.
  

Industrial Uses
Aerospace Industry, Electrical Industry, Electronic Industry   
NA   

Medical Uses
NA   
NA   

Other Uses
Alloys   
Alloys, Nuclear Research, Research Purposes   

Biological Properties
  
  

Toxicity
NA   
Low Toxic   

Present in Human Body
Yes   
No   

In Blood
0.00 Blood/mg dm-3   
27
0.00 Blood/mg dm-3   
37

In Bone
1.30 p.p.m.   
17
0.00 p.p.m.   
36

Physical Properties

Melting Point
180.54 °C   
99+
2,200.00 °C   
9

Boiling Point
1,347.00 °C   
99+
4,877.00 °C   
7

Appearance
  
  

Physical State
Solid   
Solid   

Color
Silvery White   
Shiny Gray   

Luster
NA   
NA   

Hardness
  
  

Mohs Hardness
0.60   
21
Not Available   

Brinell Hardness
5.00 MPa   
99+
Not Available   

Speed of Sound
6,000.00 m/s   
3
16,200.00 m/s   
1

Optical Properties
  
  

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
Li   
Tc   

Isotopes
  
  

Known Isotopes
8   
30
18   
21

Electronegativity
  
  

Pauling Electronegativity
0.98   
99+
1.90   
11

Sanderson Electronegativity
0.89   
26
Not Available   

Allred Rochow Electronegativity
0.97   
38
1.36   
20

Mulliken-Jaffe Electronegativity
0.97   
19
Not Available   

Allen Electronegativity
0.91   
99+
1.51   
28

Electropositivity
  
  

Pauling Electropositivity
3.02   
8
2.10   
99+

Ionization Energies
  
  

1st Energy Level
520.20 kJ/mol   
99+
702.00 kJ/mol   
36

2nd Energy Level
7,298.10 kJ/mol   
3
1,470.00 kJ/mol   
99+

3rd Energy Level
11,815.00 kJ/mol   
4
2,850.00 kJ/mol   
33

Electrochemical Equivalent
0.26 g/amp-hr   
99+
0.52 g/amp-hr   
99+

Electron Work Function
2.90 eV   
37
Not Available   

Other Chemical Properties
Corrosion, Flammable, Ionization, Radioactive Isotopes   
Anti Corrosion, Ionization, Radioactive Isotopes, Radioactivity, Solubility   

Atomic Properties

Atomic Number
3   
99+
43   
99+

Electron Configuration
[He] 2s1   
[Kr] 4d5 5s2   

Crystal Structure
Body Centered Cubic (BCC)   
Hexagonal Close Packed (HCP)   

Crystal Lattice
BCC-Crystal-Structure-.jpg#100   
HCP-Crystal-Structure-of-Technetium.jpg#100   

Atom
  
  

Number of Protons
3   
99+
43   
99+

Number of Neutrons
4   
99+
55   
99+

Number of Electrons
3   
99+
43   
99+

Radius of an Atom
  
  

Atomic Radius
152.00 pm   
31
136.00 pm   
99+

Covalent Radius
128.00 pm   
99+
147.00 pm   
37

Van der Waals Radius
182.00 pm   
35
200.00 pm   
28

Atomic Weight
6.94 amu   
99+
98.00 amu   
99+

Atomic Volume
13.10 cm3/mol   
39
8.50 cm3/mol   
99+

Adjacent Atomic Numbers
  
  

Previous Element
No Previous Element   
Molybdenum
  

Next Element
Beryllium
  
Ruthenium
  

Valence Electron Potential
19.00 (-eV)   
99+
180.00 (-eV)   
3

Lattice Constant
351.00 pm   
99+
273.50 pm   
99+

Lattice Angles
π/2, π/2, π/2   
π/2, π/2, 2 π/3   

Lattice C/A Ratio
Not Available   
1.60   
5

Mechanical Properties

Density
  
  

Density At Room Temperature
0.53 g/cm3   
99+
11.00 g/cm3   
34

Density When Liquid (at m.p.)
0.51 g/cm3   
99+
Not Available   

Tensile Strength
Not Available   
Not Available   

Viscosity
Not Available   
Not Available   

Vapor Pressure
  
  

Vapor Pressure at 1000 K
109.00 (Pa)   
2
Not Available   

Elasticity properties
  
  

Shear Modulus
4.20 GPa   
99+
Not Available   

Bulk Modulus
11.00 GPa   
99+
Not Available   

Young's Modulus
4.90 GPa   
99+
Not Available   

Poisson Ratio
Not Available   
Not Available   

Other Mechanical Properties
NA   
NA   

Magnetic Properties

Magnetic Characteristics
  
  

Specific Gravity
0.53   
99+
11.50   
24

Magnetic Ordering
Paramagnetic   
Paramagnetic   

Electrical Properties
  
  

Electrical Property
Conductor   
Conductor   

Resistivity
92.80 nΩ·m   
33
200.00 nΩ·m   
18

Electrical Conductivity
0.11 106/cm Ω   
19
0.07 106/cm Ω   
30

Electron Affinity
59.60 kJ/mol   
16
53.00 kJ/mol   
18

Thermal Properties

Specific Heat
3.60 J/(kg K)   
1
0.21 J/(kg K)   
29

Molar Heat Capacity
24.86 J/mol·K   
99+
24.27 J/mol·K   
99+

Thermal Conductivity
84.80 W/m·K   
20
50.60 W/m·K   
30

Critical Temperature
3,223.00 K   
1
Not Available   

Thermal Expansion
46.00 µm/(m·K)   
7
7.10 µm/(m·K)   
99+

Enthalpy
  
  

Enthalpy of Vaporization
134.70 kJ/mol   
99+
660.00 kJ/mol   
6

Enthalpy of Fusion
3.00 kJ/mol   
99+
23.01 kJ/mol   
9

Enthalpy of Atomization
160.70 kJ/mol   
99+
649.00 kJ/mol   
8

Standard Molar Entropy
29.10 J/mol.K   
99+
181.10 J/mol.K   
2

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