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Cerium vs Hassium


Hassium vs Cerium


Periodic Table

Symbol
Ce   
Hs   

Group Number
Not Available   
8   
10

Period Number
6   
7   

Block
f block   
d block   

Element Family
Lanthanide   
Transition Metal   

CAS Number
7440451   
99+
54037579   
11

Space Group Name
P63/mmc   
Not Available   

Space Group Number
194.00   
5
Not Available   

Facts

Interesting Facts
  • Cerium is a rare earth metal but still it is not rare at all.
  • It’s non-toxic compound Cerium sulfide has a rich red color and it is used as a pigment.
  • Cerium metal is also used in Flat screen TVs, light bulb, floodlights, etc.
  
  • Hassium metals rate of decay is very high.
  • Hassium metals 1st sample was synthesized through a nuclear reaction.
  

Sources
Found in Minerals, Mining, Ores of Minerals   
Synthetically Produced   

History
  
  

Who Discovered
Martin Heinrich Klaproth, Jöns Jakob Berzelius, Wilhelm Hisinger   
Gesellschaft für Schwerionenforschung   

Discovery
In 1803   
In 1984   

Abundance
  
  

Abundance In Universe
1 * 10-6 %   
16
Not Available   

Abundance In Sun
~0.0000004 %   
23
~-9999 %   

Abundance In Meteorites
0.00 %   
27
Not Available   

Abundance In Earth's Crust
0.01 %   
18
Not Available   

Abundance In Oceans
0.00 %   
33
Not Available   

Uses

Uses & Benefits
  • It is used to include flints for cigarette lighters.
  • Its compound Cerium (Ill) Oxide is used as a catalyst; it is put inside the walls of the oven as it prevents from the buildup of cooking residues.
  
  • Currently known uses of Hassium metal are limited to research purpose only.
  

Industrial Uses
Chemical Industry   
NA   

Medical Uses
Medical Research   
NA   

Other Uses
Alloys   
Research Purposes   

Biological Properties
  
  

Toxicity
Moderately Toxic   
Unknown   

Present in Human Body
Yes   
No   

In Blood
0.00 Blood/mg dm-3   
30
0.00 Blood/mg dm-3   
37

In Bone
2.70 p.p.m.   
14
0.00 p.p.m.   
36

Physical Properties

Melting Point
795.00 °C   
99+
Not Available   

Boiling Point
3,257.00 °C   
23
Not Available   

Appearance
  
  

Physical State
Solid   
Solid   

Color
Silvery White   
Silver   

Luster
Lustrous   
NA   

Hardness
  
  

Mohs Hardness
2.50   
14
Not Available   

Brinell Hardness
186.00 MPa   
99+
Not Available   

Vickers Hardness
210.00 MPa   
32
Not Available   

Speed of Sound
2,100.00 m/s   
99+
Not Available   

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
Ce   
Hs   

Isotopes
  
  

Known Isotopes
30   
9
7   
31

Electronegativity
  
  

Pauling Electronegativity
1.12   
99+
Not Available   

Allred Rochow Electronegativity
1.08   
31
Not Available   

Electropositivity
  
  

Pauling Electropositivity
2.88   
11
Not Available   

Ionization Energies
  
  

1st Energy Level
534.40 kJ/mol   
99+
733.30 kJ/mol   
26

2nd Energy Level
1,050.00 kJ/mol   
99+
1,756.00 kJ/mol   
24

3rd Energy Level
1,949.00 kJ/mol   
99+
2,827.00 kJ/mol   
36

4th Energy Level
3,547.00 kJ/mol   
99+
3,637.50 kJ/mol   
99+

5th Energy Level
6,325.00 kJ/mol   
22
4,940.00 kJ/mol   
34

6th Energy Level
7,490.00 kJ/mol   
21
6,175.10 kJ/mol   
23

7th Energy level
Not Available   
7,535.50 kJ/mol   
21

8th Energy Level
Not Available   
8,857.40 kJ/mol   
20

Electrochemical Equivalent
1.74 g/amp-hr   
99+
Not Available   

Electron Work Function
2.84 eV   
39
Not Available   

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

Atomic Properties

Atomic Number
58   
99+
108   
10

Electron Configuration
[Xe] 4f1 5d1 6s2   
[Rn] 5f14 6d6 7s2   

Crystal Structure
Double Hexagonal Close Packed (DHCP)   
Hexagonal Close Packed (HCP)   

Crystal Lattice
DHCP-Crystal-Structure-of-Cerium.jpg#100   
BCC-Crystal-Structure-.jpg#100   

Atom
  
  

Number of Protons
58   
99+
108   
10

Number of Neutrons
82   
99+
158   
6

Number of Electrons
58   
99+
108   
10

Radius of an Atom
  
  

Atomic Radius
181.80 pm   
12
126.00 pm   
99+

Covalent Radius
204.00 pm   
8
134.00 pm   
99+

Van der Waals Radius
235.00 pm   
17
Not Available   

Atomic Weight
140.12 amu   
99+
269.00 amu   
9

Atomic Volume
20.67 cm3/mol   
17
Not Available   

Adjacent Atomic Numbers
  
  

Previous Element
Lanthanum
  
Bohrium
  

Next Element
Meitnerium
  

Valence Electron Potential
41.78 (-eV)   
99+
Not Available   

Lattice Constant
362.00 pm   
34
Not Available   

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

Lattice C/A Ratio
Not Available   
Not Available   

Mechanical Properties

Density
  
  

Density At Room Temperature
6.77 g/cm3   
99+
40.70 g/cm3   
1

Density When Liquid (at m.p.)
6.55 g/cm3   
38
Not Available   

Tensile Strength
Not Available   
Not Available   

Viscosity
Not Available   
Not Available   

Vapor Pressure
  
  

Vapor Pressure at 1000 K
0.00 (Pa)   
34
Not Available   

Vapor Pressure at 2000 K
1.04 (Pa)   
13
Not Available   

Elasticity properties
  
  

Shear Modulus
13.50 GPa   
99+
Not Available   

Bulk Modulus
21.50 GPa   
99+
Not Available   

Young's Modulus
33.60 GPa   
99+
Not Available   

Poisson Ratio
0.24   
27
Not Available   

Other Mechanical Properties
Ductile, Malleable   
Unknown   

Magnetic Properties

Magnetic Characteristics
  
  

Specific Gravity
6.77   
99+
Not Available   

Magnetic Ordering
Paramagnetic   
Unknown   

Electrical Properties
  
  

Electrical Property
Conductor   
Unknown   

Resistivity
828.00 nΩ·m   
3
Not Available   

Electrical Conductivity
0.01 106/cm Ω   
99+
Not Available   

Electron Affinity
50.00 kJ/mol   
21
Not Available   

Thermal Properties

Specific Heat
0.19 J/(kg K)   
32
Not Available   

Molar Heat Capacity
26.94 J/mol·K   
23
Not Available   

Thermal Conductivity
11.30 W/m·K   
99+
Not Available   

Critical Temperature
Not Available   
Not Available   

Thermal Expansion
6.30 µm/(m·K)   
99+
Not Available   

Enthalpy
  
  

Enthalpy of Vaporization
414.00 kJ/mol   
16
Not Available   

Enthalpy of Fusion
5.46 kJ/mol   
99+
Not Available   

Enthalpy of Atomization
381.00 kJ/mol   
23
Not Available   

Standard Molar Entropy
72.00 J/mol.K   
12
Not Available   

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