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Lithium vs Roentgenium

Lithium
Roentgenium
Roentgenium vs Lithium


Periodic Table
Symbol
Li  
Rg  
Group Number
1  
17
11  
7
Period Number
2  
7  
Block
s block  
d block  
Element Family
Alkali  
-  
CAS Number
7439932  
99+
54386242  
1
Space Group Name
Im_ 3m  
-  
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.
  
Roentgenium is a highly unstable synthetic element.  
Sources
Found in Minerals, Mining  
Synthetically Produced  
History
  
  
Who Discovered
Johan August Arfwedson  
Gesellschaft für Schwerionenforschung  
Discovery
In 1817  
In 1994  
Abundance
  
  
Abundance In Universe
0.00 %  
19
0.00 %  
40
Abundance In Sun
0.00 %  
11
-  
Abundance In Meteorites
0.00 %  
22
-  
Abundance In Earth's Crust
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.
  
  • Currently known uses of Roentgenium metal are limited to research purpose only.
  
Industrial Uses
Aerospace Industry, Electrical Industry, Electronic Industry  
-  
Medical Uses
-  
-  
Other Uses
Alloys  
Research Purposes  
Biological Properties
  
  
Toxicity
-  
-  
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+
-  
Boiling Point
1,347.00 °C  
99+
2,800.00 °C  
38
Appearance
  
  
Physical State
Solid  
Solid  
Color
Silvery White  
Silver  
Luster
-  
Unknown Luster  
Hardness
  
  
Mohs Hardness
0.60  
23
-  
Brinell Hardness
5.00 MPa  
99+
700.00 MPa  
17
Vickers Hardness
5.30 MPa  
99+
450.00 MPa  
38
Speed of Sound
6,000.00 m/s  
6
3,430.00 m/s  
32
Optical Properties
  
  
Refractive Index
1.35  
99+
1.30  
99+
Reflectivity
95.00 %  
2
64.00 %  
19
Allotropes
No  
No  
α Allotropes
-  
-  
β Allotropes
-  
-  
γ Allotropes
-  
-  
Chemical
Chemical Formula
Li  
Rg  
Isotopes
  
  
Known Isotopes
8  
30
1  
34
Electronegativity
  
  
Pauling Electronegativity
0.98  
99+
0.00  
99+
Sanderson Electronegativity
0.89  
99+
1.90  
13
Allred Rochow Electronegativity
0.97  
39
1.30  
25
Mulliken-Jaffe Electronegativity
0.97  
99+
0.90  
99+
Allen Electronegativity
0.91  
99+
0.80  
99+
Electropositivity
  
  
Pauling Electropositivity
3.02  
8
2.20  
39
Ionization Energies
  
  
1st Energy Level
520.20 kJ/mol  
99+
1,022.70 kJ/mol  
3
2nd Energy Level
7,298.10 kJ/mol  
3
2,074.40 kJ/mol  
10
3rd Energy Level
11,815.00 kJ/mol  
4
3,077.90 kJ/mol  
24
4th Energy Level
520.20 kJ/mol  
99+
4,052.40 kJ/mol  
99+
5th Energy Level
5,200.00 kJ/mol  
99+
5,306.70 kJ/mol  
99+
6th Energy Level
5,200.00 kJ/mol  
99+
11,100.00 kJ/mol  
10
7th Energy level
5,202.00 kJ/mol  
99+
5,800.00 kJ/mol  
99+
8th Energy Level
730.00 kJ/mol  
99+
5,800.00 kJ/mol  
99+
9th Energy Level
5,200.00 kJ/mol  
99+
5,650.00 kJ/mol  
99+
10th Energy Level
520.00 kJ/mol  
99+
5,800.00 kJ/mol  
99+
11th Energy Level
5,202.00 kJ/mol  
99+
8,300.00 kJ/mol  
24
12th Energy Level
5,200.00 kJ/mol  
99+
8,300.00 kJ/mol  
99+
13th Energy Level
5,200.00 kJ/mol  
99+
8,700.00 kJ/mol  
16
14th Energy Level
520.20 kJ/mol  
99+
8,300.00 kJ/mol  
16
15th Energy Level
52,000.00 kJ/mol  
99+
87,000.00 kJ/mol  
9
16th Energy Level
52,000.00 kJ/mol  
99+
83,000.00 kJ/mol  
11
17th Energy Level
520.20 kJ/mol  
99+
830.80 kJ/mol  
30
18th Energy Level
520.00 kJ/mol  
99+
8,300.00 kJ/mol  
19
19th Energy Level
520.20 kJ/mol  
99+
580.00 kJ/mol  
99+
20th Energy Level
520.00 kJ/mol  
99+
580.00 kJ/mol  
99+
21st Energy Level
520.20 kJ/mol  
99+
5,800.00 kJ/mol  
21
22nd Energy Level
520.00 kJ/mol  
99+
580.00 kJ/mol  
99+
23rd Energy Level
520.20 kJ/mol  
99+
5,800.00 kJ/mol  
21
24th Energy Level
520.20 kJ/mol  
99+
538.70 kJ/mol  
99+
25th Energy Level
520.00 kJ/mol  
99+
0.00 kJ/mol  
99+
26th Energy Level
520.20 kJ/mol  
99+
580.00 kJ/mol  
99+
27th Energy Level
520.20 kJ/mol  
99+
580.00 kJ/mol  
99+
28th Energy Level
520.20 kJ/mol  
99+
880.00 kJ/mol  
8
29th Energy Level
520.20 kJ/mol  
99+
580.00 kJ/mol  
99+
30th Energy Level
520.00 kJ/mol  
99+
0.00 kJ/mol  
99+
Electrochemical Equivalent
0.26 g/amp-hr  
99+
3.10 g/amp-hr  
18
Electron Work Function
2.90 eV  
99+
4.90 eV  
12
Other Chemical Properties
Corrosion, Flammable, Ionization, Radioactive Isotopes  
-  
Atomic
Atomic Number
3  
99+
111  
7
Electron Configuration
[He] 2s1  
[Rn] 5f14 6d9 7s2  
Crystal Structure
Body Centered Cubic (BCC)  
Body Centered Cubic (BCC)  
Crystal Lattice
BCC-Crystal-Structure-.jpg#100  
BCC-Crystal-Structure-.jpg#100  
Atom
  
  
Number of Protons
3  
99+
111  
7
Number of Neutrons
4  
99+
161  
4
Number of Electrons
3  
99+
111  
7
Radius of an Atom
  
  
Atomic Radius
152.00 pm  
33
200.00 pm  
7
Covalent Radius
128.00 pm  
99+
126.00 pm  
99+
Van der Waals Radius
182.00 pm  
99+
280.00 pm  
6
Atomic Weight
6.94 amu  
99+
281.00 amu  
6
Atomic Volume
13.10 cm3/mol  
99+
28.70 cm3/mol  
12
Adjacent Atomic Numbers
  
  
Previous Element
No Previous Element  
Darmstadtium
  
Next Element
Beryllium
  
Copernicium
  
Valence Electron Potential
19.00 (-eV)  
99+
11.90 (-eV)  
99+
Lattice Constant
351.00 pm  
99+
0.00 pm  
99+
Lattice Angles
π/2, π/2, π/2  
-  
Lattice C/A Ratio
1.62  
16
1.90  
1
Mechanical
Density
  
  
Density At Room Temperature
0.53 g/cm3  
99+
28.70 g/cm3  
6
Density When Liquid (at m.p.)
0.51 g/cm3  
99+
28.70 g/cm3  
7
Tensile Strength
60.00 MPa  
35
65.00 MPa  
33
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+
26.00 GPa  
36
Bulk Modulus
11.00 GPa  
99+
0.00 GPa  
99+
Young's Modulus
4.90 GPa  
99+
12.70 GPa  
99+
Poisson Ratio
0.36  
8
0.30  
14
Other Mechanical Properties
-  
-  
Magnetic
Magnetic Characteristics
  
  
Specific Gravity
0.53  
99+
28.70  
8
Magnetic Ordering
Paramagnetic  
-  
Permeability
0.00 H/m  
11
0.00 H/m  
12
Susceptibility
0.00  
16
0.00  
24
Electrical Properties
  
  
Electrical Property
Conductor  
-  
Resistivity
92.80 nΩ·m  
33
0.20 nΩ·m  
99+
Electrical Conductivity
0.11 106/cm Ω  
22
0.00 106/cm Ω  
99+
Electron Affinity
59.60 kJ/mol  
20
50.00 kJ/mol  
26
Thermal
Specific Heat
3.60 J/(kg K)  
1
0.13 J/(kg K)  
40
Molar Heat Capacity
24.86 J/mol·K  
99+
23.70 J/mol·K  
99+
Thermal Conductivity
84.80 W/m·K  
20
0.10 W/m·K  
99+
Critical Temperature
3,223.00 K  
5
1,100.00 K  
99+
Thermal Expansion
46.00 µm/(m·K)  
7
12.60 µm/(m·K)  
40
Enthalpy
  
  
Enthalpy of Vaporization
134.70 kJ/mol  
99+
580.00 kJ/mol  
12
Enthalpy of Fusion
3.00 kJ/mol  
99+
-  
Enthalpy of Atomization
160.70 kJ/mol  
99+
580.00 kJ/mol  
14
Standard Molar Entropy
29.10 J/mol.K  
99+
57.00 J/mol.K  
30
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