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Lanthanum vs Flerovium

Lanthanum
Flerovium
Flerovium vs Lanthanum


Periodic Table
Symbol
La  
Fl  
Group Number
3  
15
14  
4
Period Number
6  
7  
Block
f block  
p block  
Element Family
Lanthanide  
Post-​Transition  
CAS Number
7439910  
99+
54085164  
5
Space Group Name
P63/mmc  
-  
Space Group Number
194.00  
7
198.00  
6
Facts
Interesting Facts
  • Lanthanum metal is highly malleable, ductile and sectile.
  • If exposed to air Lanthanum metal oxidizes rapidly.
  
Flerovium is named after the Flerov Laboratory of Nuclear Reactions.  
Sources
Found in Minerals, Mining, Ores of Minerals  
-  
History
  
  
Who Discovered
Carl Gustaf Mosander  
Joint Institute for Nuclear Research and Lawrence Livermore National Laboratory  
Discovery
In 1838  
In 1999  
Abundance
  
  
Abundance In Universe
0.00 %  
23
0.00 %  
40
Abundance In Sun
0.00 %  
25
-  
Abundance In Meteorites
0.00 %  
32
0.00 %  
99+
Abundance In Earth's Crust
0.00 %  
19
-  
Abundance In Oceans
0.00 %  
29
-  
Abundance In Humans
0.00 %  
24
-  
Uses
Uses & Benefits
  • It has no commercial uses, but its alloys are in high demand. Lanthanum and Nickel alloy is used for the hydrogen gas storage.
  • The best-known use for mischmetal alloy of Lanthanum is; as a ‘flints’ for cigarette lighters.
  
  • Currently known uses of Flerovium metal are limited to research purpose only.
  
Industrial Uses
Electrical Industry, Electronic Industry  
-  
Medical Uses
-  
-  
Other Uses
Alloys, Mirror Manufacturing  
Alloys, Research Purposes  
Biological Properties
  
  
Toxicity
Low Toxic  
-  
Present in Human Body
Yes  
No  
In Blood
0.00 Blood/mg dm-3  
32
0.00 Blood/mg dm-3  
40
In Bone
0.08 p.p.m.  
29
0.00 p.p.m.  
99+
Physical
Melting Point
920.00 °C  
99+
67.00 °C  
99+
Boiling Point
3,469.00 °C  
19
147.00 °C  
99+
Appearance
  
  
Physical State
Solid  
Solid  
Color
Silvery White  
-  
Luster
-  
Unknown Luster  
Hardness
  
  
Mohs Hardness
2.50  
15
4.00  
11
Brinell Hardness
350.00 MPa  
36
350.00 MPa  
36
Vickers Hardness
360.00 MPa  
99+
450.00 MPa  
38
Speed of Sound
2,475.00 m/s  
99+
3,200.00 m/s  
35
Optical Properties
  
  
Refractive Index
1.80  
22
1.30  
99+
Reflectivity
70.00 %  
13
68.00 %  
15
Allotropes
No  
No  
α Allotropes
-  
-  
β Allotropes
-  
-  
γ Allotropes
-  
-  
Chemical
Chemical Formula
La  
Fl  
Isotopes
  
  
Known Isotopes
31  
8
1  
34
Electronegativity
  
  
Pauling Electronegativity
1.10  
99+
2.60  
1
Sanderson Electronegativity
1.10  
38
1.30  
25
Allred Rochow Electronegativity
1.08  
32
1.30  
25
Mulliken-Jaffe Electronegativity
1.10  
99+
1.30  
33
Allen Electronegativity
1.10  
99+
1.30  
40
Electropositivity
  
  
Pauling Electropositivity
2.90  
10
2.00  
99+
Ionization Energies
  
  
1st Energy Level
538.10 kJ/mol  
99+
823.90 kJ/mol  
13
2nd Energy Level
1,067.00 kJ/mol  
99+
1,601.60 kJ/mol  
35
3rd Energy Level
1,850.30 kJ/mol  
99+
3,367.30 kJ/mol  
18
4th Energy Level
4,819.00 kJ/mol  
32
4,399.70 kJ/mol  
37
5th Energy Level
5,940.00 kJ/mol  
99+
5,847.00 kJ/mol  
99+
6th Energy Level
5,380.00 kJ/mol  
99+
11,400.00 kJ/mol  
9
7th Energy level
5,380.00 kJ/mol  
99+
5,400.00 kJ/mol  
99+
8th Energy Level
5,380.00 kJ/mol  
99+
6,700.00 kJ/mol  
39
9th Energy Level
5,380.00 kJ/mol  
99+
5,840.00 kJ/mol  
99+
10th Energy Level
5,380.00 kJ/mol  
99+
6,000.00 kJ/mol  
99+
11th Energy Level
5,380.00 kJ/mol  
99+
6,000.00 kJ/mol  
99+
12th Energy Level
5,380.00 kJ/mol  
99+
36,400.00 kJ/mol  
24
13th Energy Level
5,380.00 kJ/mol  
99+
5,400.00 kJ/mol  
99+
14th Energy Level
5,380.00 kJ/mol  
99+
1,145.00 kJ/mol  
99+
15th Energy Level
53,800.00 kJ/mol  
99+
67,000.00 kJ/mol  
33
16th Energy Level
53,800.00 kJ/mol  
99+
36,400.00 kJ/mol  
99+
17th Energy Level
538.10 kJ/mol  
99+
1,144.00 kJ/mol  
17
18th Energy Level
5,380.00 kJ/mol  
99+
3,400.00 kJ/mol  
99+
19th Energy Level
538.10 kJ/mol  
99+
1,127.50 kJ/mol  
16
20th Energy Level
538.00 kJ/mol  
99+
800.00 kJ/mol  
24
21st Energy Level
538.10 kJ/mol  
99+
670.00 kJ/mol  
99+
22nd Energy Level
538.00 kJ/mol  
99+
340.00 kJ/mol  
99+
23rd Energy Level
5,380.00 kJ/mol  
25
1,120.00 kJ/mol  
34
24th Energy Level
538.00 kJ/mol  
99+
540.10 kJ/mol  
99+
25th Energy Level
538.00 kJ/mol  
99+
0.00 kJ/mol  
99+
26th Energy Level
538.00 kJ/mol  
99+
540.10 kJ/mol  
99+
27th Energy Level
538.10 kJ/mol  
99+
540.00 kJ/mol  
99+
28th Energy Level
538.00 kJ/mol  
99+
800.00 kJ/mol  
18
29th Energy Level
538.10 kJ/mol  
99+
800.10 kJ/mol  
17
30th Energy Level
538.00 kJ/mol  
99+
0.00 kJ/mol  
99+
Electrochemical Equivalent
1.73 g/amp-hr  
99+
3.00 g/amp-hr  
21
Electron Work Function
3.50 eV  
99+
4.90 eV  
12
Other Chemical Properties
Ionization, Radioactive Isotopes, Solubility  
Ionization, Radioactive Isotopes, Radioactivity  
Atomic
Atomic Number
57  
99+
114  
4
Electron Configuration
[Xe] 5d2 6s2  
[Rn] 5f14 6d10 7s2 7p2  
Crystal Structure
Double Hexagonal Close Packed (DHCP)  
Not Known  
Crystal Lattice
DHCP-Crystal-Structure-of-Lanthanum.jpg#100  
Unknown-Crystal-Structure-of-Flerovium.jpg#100  
Atom
  
  
Number of Protons
57  
99+
114  
4
Number of Neutrons
82  
99+
184  
2
Number of Electrons
57  
99+
114  
4
Radius of an Atom
  
  
Atomic Radius
187.00 pm  
10
180.00 pm  
16
Covalent Radius
207.00 pm  
6
171.00 pm  
26
Van der Waals Radius
240.00 pm  
17
0.00 pm  
99+
Atomic Weight
138.91 amu  
99+
289.00 amu  
3
Atomic Volume
20.73 cm3/mol  
26
14.00 cm3/mol  
99+
Adjacent Atomic Numbers
  
  
Previous Element
Barium
  
Nihonium
  
Next Element
Cerium
  
Moscovium
  
Valence Electron Potential
40.71 (-eV)  
99+
0.00 (-eV)  
99+
Lattice Constant
377.20 pm  
31
-  
Lattice Angles
π/2, π/2, 2 π/3  
-  
Lattice C/A Ratio
1.62  
16
1.60  
22
Mechanical
Density
  
  
Density At Room Temperature
6.16 g/cm3  
99+
14.00 g/cm3  
24
Density When Liquid (at m.p.)
5.94 g/cm3  
99+
14.00 g/cm3  
24
Tensile Strength
45.00 MPa  
40
0.10 MPa  
99+
Viscosity
0.00  
25
0.00  
25
Vapor Pressure
  
  
Vapor Pressure at 1000 K
0.00 (Pa)  
22
0.00 (Pa)  
37
Vapor Pressure at 2000 K
0.98 (Pa)  
15
0.00 (Pa)  
30
Elasticity properties
  
  
Shear Modulus
14.30 GPa  
99+
35.00 GPa  
21
Bulk Modulus
27.90 GPa  
99+
15.00 GPa  
99+
Young's Modulus
36.60 GPa  
99+
0.00 GPa  
99+
Poisson Ratio
0.28  
17
0.30  
14
Other Mechanical Properties
Ductile  
-  
Magnetic
Magnetic Characteristics
  
  
Specific Gravity
6.17  
99+
14.00  
25
Magnetic Ordering
Paramagnetic  
-  
Permeability
0.00 H/m  
15
0.00 H/m  
15
Susceptibility
0.00  
25
0.00  
24
Electrical Properties
  
  
Electrical Property
Conductor  
-  
Resistivity
615.00 nΩ·m  
7
5.40 nΩ·m  
99+
Electrical Conductivity
0.01 106/cm Ω  
99+
0.00 106/cm Ω  
99+
Electron Affinity
48.00 kJ/mol  
28
-  
Thermal
Specific Heat
0.19 J/(kg K)  
33
0.10 J/(kg K)  
99+
Molar Heat Capacity
27.11 J/mol·K  
27
27.00 J/mol·K  
29
Thermal Conductivity
13.40 W/m·K  
99+
0.00 W/m·K  
99+
Critical Temperature
1,193.00 K  
99+
340.00 K  
99+
Thermal Expansion
12.10 µm/(m·K)  
99+
7.10 µm/(m·K)  
99+
Enthalpy
  
  
Enthalpy of Vaporization
399.60 kJ/mol  
24
337.40 kJ/mol  
38
Enthalpy of Fusion
6.20 kJ/mol  
99+
14.50 kJ/mol  
26
Enthalpy of Atomization
431.00 kJ/mol  
21
-  
Standard Molar Entropy
56.90 J/mol.K  
31
57.00 J/mol.K  
30
Periodic Table >>
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