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Lithium vs Technetium

Lithium
Technetium
Technetium vs Lithium


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  
2
194.00  
7
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
0.00 %  
19
0.00 %  
40
Abundance In Sun
0.00 %  
11
0.00 %  
18
Abundance In Meteorites
0.00 %  
22
-  
Abundance In Earth's Crust
0.00 %  
99+
0.00 %  
99+
Abundance In Oceans
0.00 %  
15
-  
Abundance In Humans
0.00 %  
19
-  
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  
-  
Medical Uses
-  
-  
Other Uses
Alloys  
Alloys, Nuclear Research, Research Purposes  
Biological Properties
  
  
Toxicity
-  
Low Toxic  
Present in Human Body
Yes  
No  
In Blood
0.00 Blood/mg dm-3  
27
0.00 Blood/mg dm-3  
40
In Bone
1.30 p.p.m.  
18
0.00 p.p.m.  
99+
Physical
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
-  
-  
Hardness
  
  
Mohs Hardness
0.60  
23
2.25  
16
Brinell Hardness
5.00 MPa  
99+
550.00 MPa  
27
Vickers Hardness
5.30 MPa  
99+
500.00 MPa  
35
Speed of Sound
6,000.00 m/s  
6
16,200.00 m/s  
1
Optical Properties
  
  
Refractive Index
1.35  
99+
1.90  
18
Reflectivity
95.00 %  
2
35.00 %  
34
Allotropes
No  
No  
α Allotropes
-  
-  
β Allotropes
-  
-  
γ Allotropes
-  
-  
Chemical
Chemical Formula
Li  
Tc  
Isotopes
  
  
Known Isotopes
8  
30
18  
21
Electronegativity
  
  
Pauling Electronegativity
0.98  
99+
1.90  
12
Sanderson Electronegativity
0.89  
99+
1.90  
13
Allred Rochow Electronegativity
0.97  
39
1.36  
21
Mulliken-Jaffe Electronegativity
0.97  
99+
1.90  
13
Allen Electronegativity
0.91  
99+
1.51  
31
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  
34
4th Energy Level
520.20 kJ/mol  
99+
7,020.00 kJ/mol  
14
5th Energy Level
5,200.00 kJ/mol  
99+
7,020.00 kJ/mol  
28
6th Energy Level
5,200.00 kJ/mol  
99+
7,020.00 kJ/mol  
99+
7th Energy level
5,202.00 kJ/mol  
99+
4,700.00 kJ/mol  
99+
8th Energy Level
730.00 kJ/mol  
99+
4,700.00 kJ/mol  
99+
9th Energy Level
5,200.00 kJ/mol  
99+
7,020.00 kJ/mol  
35
10th Energy Level
520.00 kJ/mol  
99+
7,020.00 kJ/mol  
39
11th Energy Level
5,202.00 kJ/mol  
99+
7,020.00 kJ/mol  
37
12th Energy Level
5,200.00 kJ/mol  
99+
7,020.00 kJ/mol  
99+
13th Energy Level
5,200.00 kJ/mol  
99+
7,020.00 kJ/mol  
33
14th Energy Level
520.20 kJ/mol  
99+
7,020.00 kJ/mol  
23
15th Energy Level
52,000.00 kJ/mol  
99+
70,200.00 kJ/mol  
29
16th Energy Level
52,000.00 kJ/mol  
99+
70,200.00 kJ/mol  
24
17th Energy Level
520.20 kJ/mol  
99+
702.50 kJ/mol  
99+
18th Energy Level
520.00 kJ/mol  
99+
7,020.00 kJ/mol  
35
19th Energy Level
520.20 kJ/mol  
99+
702.00 kJ/mol  
99+
20th Energy Level
520.00 kJ/mol  
99+
702.00 kJ/mol  
35
21st Energy Level
520.20 kJ/mol  
99+
702.00 kJ/mol  
99+
22nd Energy Level
520.00 kJ/mol  
99+
702.00 kJ/mol  
29
23rd Energy Level
520.20 kJ/mol  
99+
702.00 kJ/mol  
99+
24th Energy Level
520.20 kJ/mol  
99+
702.50 kJ/mol  
28
25th Energy Level
520.00 kJ/mol  
99+
702.00 kJ/mol  
30
26th Energy Level
520.20 kJ/mol  
99+
702.00 kJ/mol  
29
27th Energy Level
520.20 kJ/mol  
99+
702.00 kJ/mol  
30
28th Energy Level
520.20 kJ/mol  
99+
702.00 kJ/mol  
35
29th Energy Level
520.20 kJ/mol  
99+
702.00 kJ/mol  
36
30th Energy Level
520.00 kJ/mol  
99+
702.00 kJ/mol  
30
Electrochemical Equivalent
0.26 g/amp-hr  
99+
0.52 g/amp-hr  
99+
Electron Work Function
2.90 eV  
99+
4.90 eV  
12
Other Chemical Properties
Corrosion, Flammable, Ionization, Radioactive Isotopes  
Anti Corrosion, Ionization, Radioactive Isotopes, Radioactivity, Solubility  
Atomic
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  
33
136.00 pm  
99+
Covalent Radius
128.00 pm  
99+
147.00 pm  
39
Van der Waals Radius
182.00 pm  
99+
200.00 pm  
35
Atomic Weight
6.94 amu  
99+
98.00 amu  
99+
Atomic Volume
13.10 cm3/mol  
99+
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
1.62  
16
1.60  
21
Mechanical
Density
  
  
Density At Room Temperature
0.53 g/cm3  
99+
11.00 g/cm3  
36
Density When Liquid (at m.p.)
0.51 g/cm3  
99+
11.00 g/cm3  
34
Tensile Strength
60.00 MPa  
35
50.00 MPa  
38
Viscosity
0.00  
10
0.00  
25
Vapor Pressure
  
  
Vapor Pressure at 1000 K
109.00 (Pa)  
2
0.00 (Pa)  
37
Vapor Pressure at 2000 K
0.00 (Pa)  
30
0.00 (Pa)  
99+
Elasticity properties
  
  
Shear Modulus
4.20 GPa  
99+
27.00 GPa  
34
Bulk Modulus
11.00 GPa  
99+
100.00 GPa  
16
Young's Modulus
4.90 GPa  
99+
50.00 GPa  
39
Poisson Ratio
0.36  
8
0.38  
6
Other Mechanical Properties
-  
-  
Magnetic
Magnetic Characteristics
  
  
Specific Gravity
0.53  
99+
11.50  
37
Magnetic Ordering
Paramagnetic  
Paramagnetic  
Permeability
0.00 H/m  
11
0.00 H/m  
17
Susceptibility
0.00  
16
0.00  
24
Electrical Properties
  
  
Electrical Property
Conductor  
Conductor  
Resistivity
92.80 nΩ·m  
33
200.00 nΩ·m  
18
Electrical Conductivity
0.11 106/cm Ω  
22
0.07 106/cm Ω  
35
Electron Affinity
59.60 kJ/mol  
20
53.00 kJ/mol  
23
Thermal
Specific Heat
3.60 J/(kg K)  
1
0.21 J/(kg K)  
30
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  
5
2,150.00 K  
16
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  
7
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  
9
Standard Molar Entropy
29.10 J/mol.K  
99+
181.10 J/mol.K  
2
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