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Properties of Chromium and Einsteinium


Properties of Einsteinium & Chromium


Physical Properties

Melting Point
1,857.00 °C   
14
860.00 °C   
99+

Boiling Point
2,672.00 °C   
39
996.00 °C   
99+

Hardness
  
  

Mohs Hardness
8.50   
1
Not Available   

Brinell Hardness
687.00 MPa   
16
Not Available   

Vickers Hardness
1,060.00 MPa   
10
Not Available   

Optical Properties
  
  

Refractive Index
Not Available   
Not Available   

Reflectivity
Not Available   
Not Available   

Speed of Sound
5,940.00 m/s   
5
Not Available   

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
Cr   
Es   

Isotopes
  
  

Known Isotopes
21   
18
16   
23

Electronegativity
  
  

Pauling Electronegativity
1.66   
18
1.54   
26

Sanderson Electronegativity
1.66   
14
Not Available   

Allred Rochow Electronegativity
1.56   
10
1.20   
27

Mulliken-Jaffe Electronegativity
Not Available   
Not Available   

Allen Electronegativity
1.65   
19
Not Available   

Electropositivity
  
  

Pauling Electropositivity
2.34   
36
2.70   
22

Ionization Energies
  
  

1st Energy Level
26,130.00 kJ/mol   
1
619.00 kJ/mol   
99+

2nd Energy Level
28,750.00 kJ/mol   
1
1,216.00 kJ/mol   
99+

3rd Energy Level
34,230.00 kJ/mol   
1
2,334.00 kJ/mol   
99+

Electrochemical Equivalent
0.32 g/amp-hr   
99+
4.74 g/amp-hr   
5

Electron Work Function
4.50 eV   
14
Not Available   

Other Chemical Properties
?
Anti-corrosion metals have the protection on their surfaces which protect them from corroding in corrosive environments.Anti Corrosion, 
?
Stable metals are non radioactive metals and have zero valence electrons in the outer shell.Chemical Stability, 
?
Ionization is the process by which an atom or a molecule acquires a negative or positive charge by gaining or losing electrons to form ions, often in conjunction with other chemical changes.Ionization, 
?
Radioactive metals emit particles and radiation from their nuclei. This process comes in the picture because their nuclei experience the intense conflict between two strong forces. This metal also have radioactive isotopes.Radioactive Isotopes, 
?
Solubility is a chemical property referring to the ability for a given substance, the solute, to dissolve in a solvent.Solubility
  
?
Ionization is the process by which an atom or a molecule acquires a negative or positive charge by gaining or losing electrons to form ions, often in conjunction with other chemical changes.Ionization, 
?
Radioactive metals emit particles and radiation from their nuclei. This process comes in the picture because their nuclei experience the intense conflict between two strong forces. This metal also have radioactive isotopes.Radioactive Isotopes, 
?
Radioactive metals emit particles and radiation from their nuclei. This process comes in the picture because their nuclei experience the intense conflict between two strong forces.Radioactivity
  

Mechanical Properties

Density
  
  

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

Density When Liquid (at m.p.)
6.30 g/cm3   
40
Not Available   

Vapor Pressure
  
  

Vapor Pressure at 1000 K
0.00 (Pa)   
24
Not Available   

Vapor Pressure at 2000 K
774.00 (Pa)   
1
Not Available   

Tensile Strength
689.00 MPa   
7
Not Available   

Viscosity
Not Available   
Not Available   

Elasticity properties
  
  

Shear Modulus
115.00 GPa   
9
Not Available   

Bulk Modulus
160.00 GPa   
11
Not Available   

Young's Modulus
279.00 GPa   
8
Not Available   

Poisson Ratio
0.21   
32
Not Available   

Other Mechanical Properties
NA   
NA   

Periodic Table

Symbol
Cr   
Es   

Group Number
6   
12
Not Available   

Period Number
4   
7   

Block
?
The d-block is on the middle of the periodic table and includes elements from columns 3 through 12. These elements are also known as the transition metals because they show a transitivity in their properties i.e. they show a trend in their properties.d block
  
?
The f-block is in the center-left of a 32-column periodic table but in the footnoted appendage of 18-column tables. These elements are not generally considered as part of any group. They are often called inner transition metals.f block
  

Element Family
?
What is Transition Metal? All transition metals are placed under the d-block from group number 3 to 12. Transition metals show characteristics like malleability, ductility and are good conductor of electricity.Transition Metal
  
?
Total 15 metals are included in actinide series, from Actinium to Lawrencium. Actinide series is located under f and d block of the periodic table.Actinide
  

Atomic Properties

Atomic Number
24   
99+
99   
19

Atomic Weight
52.00 amu   
99+
252.00 amu   
16

Atomic Volume
7.23 cm3/mol   
99+
Not Available   

Electron Configuration
[Ar] 3d5 4s1   
[Rn] 5f11 7s2   

Valence Electron Potential
170.00 (-eV)   
4
Not Available   

Atom
  
  

Number of Protons
24   
99+
99   
19

Number of Neutrons
28   
99+
153   
9

Number of Electrons
24   
99+
99   
19

Crystal Structure
?
BCC is a basis type of cubic crystal structure. In crystallography, the cubic crystals structure is a crystal system where the unit cell has a cube shaped structure. This is one of the simplest crystal structure found in crystals of metal.Body Centered Cubic (BCC)
  
?
In crystallography, the cubic (or isometric) crystal system is a crystal system where the unit cell is in the shape of a cube. This is one of the most common and simplest shapes found in crystals and minerals.Face Centered Cubic (FCC)
  

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

Radius of an Atom
  
  

Atomic Radius
128.00 pm   
99+
186.00 pm   
9

Covalent Radius
139.00 pm   
99+
Not Available   

Van der Waals Radius
200.00 pm   
28
Not Available   

Lattice Constant
291.00 pm   
99+
Not Available   

Lattice Angles
π/2, π/2, π/2   
NA   

Lattice C/A Ratio
Not Available   
Not Available   

Adjacent Atomic Numbers
  
  

Next Element
Manganese
  
Fermium
  

Previous Element
Vanadium
  

Magnetic Properties

Electrical Properties
  
  

Resistivity
125.00 nΩ·m   
27
Not Available   

Electrical Conductivity
0.08 106/cm Ω   
25
Not Available   

Electron Affinity
64.30 kJ/mol   
15
Not Available   

Electrical Property
NA   
Unknown   

Magnetic Characteristics
  
  

Specific Gravity
7.19   
99+
Not Available   

Magnetic Ordering
?
Antiferromagnetic metals denote or exhibit a form of magnetism characterized by an anti-parallel alignment of adjacent electron spins in a crystal lattice.Antiferromagnetic
  
?
Paramagnetic metals are slightly attracted by magnet, but they can’t retain the magnetic effect once they are removed from the magnetic field.Paramagnetic
  

Permeability
Not Available   
Not Available   

Susceptibility
Not Available   
Not Available   

Thermal Properties

Specific Heat
0.45 J/(kg K)   
12
Not Available   

Thermal Conductivity
93.90 W/m·K   
17
Not Available   

Critical Temperature
Not Available   
Not Available   

Molar Heat Capacity
23.35 J/mol·K   
99+
Not Available   

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

Standard Molar Entropy
23.80 J/mol.K   
99+
Not Available   

Enthalpy
  
  

Enthalpy of Vaporization
348.80 kJ/mol   
24
Not Available   

Enthalpy of Fusion
15.31 kJ/mol   
20
Not Available   

Enthalpy of Atomization
397.50 kJ/mol   
21
Not Available   

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