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Einsteinium vs Radium


Radium vs Einsteinium


Periodic Table

Symbol
Es   
Ra   

Group Number
Not Available   
2   
16

Period Number
7   
7   

Block
f block   
s block   

Element Family
Actinide   
Alkaline Earth   

CAS Number
7429927   
99+
7440144   
99+

Space Group Name
Not Available   
Im_ 3m   

Space Group Number
Not Available   
229.00   
1

Facts

Interesting Facts
  • Einsteinium is the transuranic element found in US.
  • Only 0.01 mg of Einsteinium was synthesized in 1961.
  
  • Radium metal is the heaviest metal of Alkaline earth metals column.
  • Radium metal is highly radioactive and does not have any stable isotopes.
  

Sources
Made by Bombarding Uranium with Neutrons   
Mining, Ores of metals   

History
  
  

Who Discovered
Lawrence Berkeley National Laboratory   
Not Available   

Discovery
In 1952   
In 1898   

Abundance
  
  

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

Abundance In Oceans
Not Available   
0.00 %   
99+

Abundance In Humans
Not Available   
0.00 %   
20

Uses

Uses & Benefits
  • Currently known uses of Einsteinium metal are limited to research purpose only.
  
  • It is a highly radioactive metal; and sometime Radium-223 is used to treat prostate cancer.
  • It is used in luminous paints.
  

Industrial Uses
NA   
NA   

Medical Uses
NA   
Pharmaceutical Industry   

Other Uses
Alloys, Nuclear Research, Research Purposes   
NA   

Biological Properties
  
  

Toxicity
Toxic   
Highly Toxic   

Present in Human Body
No   
No   

In Blood
0.00 Blood/mg dm-3   
37
Not Available   

In Bone
0.00 p.p.m.   
36
Not Available   

Physical Properties

Melting Point
860.00 °C   
99+
700.00 °C   
99+

Boiling Point
996.00 °C   
99+
1,737.00 °C   
99+

Appearance
  
  

Physical State
Solid   
Solid   

Color
Silver   
Silvery White   

Luster
NA   
Metallic   

Hardness
  
  

Speed of Sound
Not Available   
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
Es   
Ra   

Isotopes
  
  

Known Isotopes
16   
23
33   
6

Electronegativity
  
  

Pauling Electronegativity
1.54   
26
0.90   
99+

Allred Rochow Electronegativity
1.20   
27
0.97   
38

Mulliken-Jaffe Electronegativity
Not Available   
0.92   
20

Allen Electronegativity
Not Available   
0.89   
99+

Electropositivity
  
  

Pauling Electropositivity
2.70   
22
3.10   
5

Ionization Energies
  
  

1st Energy Level
619.00 kJ/mol   
99+
509.30 kJ/mol   
99+

2nd Energy Level
1,216.00 kJ/mol   
99+
979.00 kJ/mol   
99+

3rd Energy Level
2,334.00 kJ/mol   
99+
Not Available   

4th Energy Level
3,734.00 kJ/mol   
99+
Not Available   

Electrochemical Equivalent
4.74 g/amp-hr   
5
4.22 g/amp-hr   
6

Electron Work Function
Not Available   
Not Available   

Other Chemical Properties
Ionization, Radioactive Isotopes, Radioactivity   
Ionization, Radioactive Isotopes, Radioactivity   

Atomic Properties

Atomic Number
99   
19
88   
30

Electron Configuration
[Rn] 5f11 7s2   
[Rn] 7s2   

Crystal Structure
Face Centered Cubic (FCC)   
Body Centered Cubic (BCC)   

Crystal Lattice
FCC-Crystal-Structure-of-Einsteinium.jpg#100   
BCC-Crystal-Structure-.jpg#100   

Atom
  
  

Number of Protons
99   
19
88   
30

Number of Neutrons
153   
9
138   
16

Number of Electrons
99   
19
88   
30

Radius of an Atom
  
  

Atomic Radius
186.00 pm   
9
Not Available   

Covalent Radius
Not Available   
221.00 pm   
3

Van der Waals Radius
Not Available   
283.00 pm   
4

Atomic Weight
252.00 amu   
16
226.00 amu   
26

Atomic Volume
Not Available   
45.20 cm3/mol   
4

Adjacent Atomic Numbers
  
  

Previous Element
Francium
  

Next Element
Fermium
  
Actinium
  

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

Lattice Constant
Not Available   
514.80 pm   
13

Lattice Angles
NA   
π/2, π/2, π/2   

Lattice C/A Ratio
Not Available   
Not Available   

Mechanical Properties

Density
  
  

Density At Room Temperature
8.84 g/cm3   
99+
5.50 g/cm3   
99+

Tensile Strength
Not Available   
Not Available   

Viscosity
Not Available   
Not Available   

Vapor Pressure
  
  

Elasticity properties
  
  

Poisson Ratio
Not Available   
Not Available   

Other Mechanical Properties
NA   
NA   

Magnetic Properties

Magnetic Characteristics
  
  

Specific Gravity
Not Available   
5.00   
99+

Magnetic Ordering
Paramagnetic   
Nonmagnetic   

Electrical Properties
  
  

Electrical Property
Unknown   
NA   

Resistivity
Not Available   
100.00 nΩ·m   
31

Thermal Properties

Specific Heat
Not Available   
0.12 J/(kg K)   
40

Molar Heat Capacity
Not Available   
Not Available   

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

Critical Temperature
Not Available   
Not Available   

Thermal Expansion
Not Available   
Not Available   

Enthalpy
  
  

Enthalpy of Atomization
Not Available   
163.00 kJ/mol   
99+

Standard Molar Entropy
Not Available   
71.00 J/mol.K   
14

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