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Properties of Californium and Lanthanum


Properties of Lanthanum & Californium


Physical Properties

Melting Point
900.00 °C   
99+
920.00 °C   
99+

Boiling Point
1,470.00 °C   
99+
3,469.00 °C   
18

Hardness
  
  

Mohs Hardness
3.00   
12
2.50   
14

Brinell Hardness
Not Available   
350.00 MPa   
30

Vickers Hardness
Not Available   
360.00 MPa   
26

Optical Properties
  
  

Refractive Index
Not Available   
Not Available   

Reflectivity
Not Available   
Not Available   

Speed of Sound
Not Available   
2,475.00 m/s   
37

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
Cf   
La   

Isotopes
  
  

Known Isotopes
20   
19
31   
8

Electronegativity
  
  

Pauling Electronegativity
1.30   
32
1.10   
99+

Sanderson Electronegativity
Not Available   
Not Available   

Allred Rochow Electronegativity
1.20   
27
1.08   
31

Mulliken-Jaffe Electronegativity
Not Available   
Not Available   

Allen Electronegativity
Not Available   
Not Available   

Electropositivity
  
  

Pauling Electropositivity
2.70   
22
2.90   
10

Ionization Energies
  
  

1st Energy Level
608.00 kJ/mol   
99+
538.10 kJ/mol   
99+

2nd Energy Level
1,206.00 kJ/mol   
99+
1,067.00 kJ/mol   
99+

3rd Energy Level
2,267.00 kJ/mol   
99+
1,850.30 kJ/mol   
99+

Electrochemical Equivalent
3.12 g/amp-hr   
15
1.73 g/amp-hr   
99+

Electron Work Function
Not Available   
3.50 eV   
31

Other Chemical Properties
?
Corrosion is a process which converts refined metals to their more stable forms, for example, its oxide and hydroxide. This process of metals getting corroded is a gradual destruction of metals by chemical reactions.Corrosion, 
?
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, 
?
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, 
?
Solubility is a chemical property referring to the ability for a given substance, the solute, to dissolve in a solvent.Solubility
  

Mechanical Properties

Density
  
  

Density At Room Temperature
15.10 g/cm3   
21
6.16 g/cm3   
99+

Density When Liquid (at m.p.)
Not Available   
5.94 g/cm3   
99+

Vapor Pressure
  
  

Vapor Pressure at 1000 K
Not Available   
Not Available   

Vapor Pressure at 2000 K
Not Available   
0.98 (Pa)   
15

Tensile Strength
Not Available   
Not Available   

Viscosity
Not Available   
Not Available   

Elasticity properties
  
  

Shear Modulus
Not Available   
14.30 GPa   
40

Bulk Modulus
Not Available   
27.90 GPa   
99+

Young's Modulus
Not Available   
36.60 GPa   
99+

Poisson Ratio
Not Available   
0.28   
17

Other Mechanical Properties
?
Malleability of metals defines their ability to deform under compressive stress; this is often characterized by the metals ability to form a thin sheet by hammering or rolling.Malleable, 
?
Sectility is the ability to be cut into pieces. Metals and paper are sectile.Sectile
  
?
Ductility of metals defines their ability to deform under tensile stress; this is often characterized by the metals ability to be stretched into a wire.Ductile
  

Periodic Table

Symbol
Cf   
La   

Group Number
Not Available   
Not Available   

Period Number
7   
6   

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
  
?
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
?
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
  
?
Total 15 metals are included in Lanthanide series from Lanthanum to Lutetium. Lanthanide series is located under f and d block of the periodic table.Lanthanide
  

Atomic Properties

Atomic Number
98   
20
57   
99+

Atomic Weight
251.00 amu   
17
138.91 amu   
99+

Atomic Volume
Not Available   
20.73 cm3/mol   
16

Electron Configuration
[Rn] 5f10 7s2   
[Xe] 5d2 6s2   

Valence Electron Potential
44.50 (-eV)   
38
40.71 (-eV)   
99+

Atom
  
  

Number of Protons
98   
20
57   
99+

Number of Neutrons
153   
9
82   
99+

Number of Electrons
98   
20
57   
99+

Crystal Structure
?
In crystallography, the hexagonal crystal structure and its double hexagonal crystal structure is one of the 7 crystal structure, The hexagonal lattice system consists of just one Bravais lattice type: the hexagonal shape.Double Hexagonal Close Packed (DHCP)
  
?
In crystallography, the hexagonal crystal structure and its double hexagonal crystal structure is one of the 7 crystal structure, The hexagonal lattice system consists of just one Bravais lattice type: the hexagonal shape.Double Hexagonal Close Packed (DHCP)
  

Crystal Lattice
DHCP-Crystal-Structure-of-Californium.jpg#100   
DHCP-Crystal-Structure-of-Lanthanum.jpg#100   

Radius of an Atom
  
  

Atomic Radius
186.00 pm   
9
187.00 pm   
8

Covalent Radius
Not Available   
207.00 pm   
6

Van der Waals Radius
Not Available   
240.00 pm   
13

Lattice Constant
338.00 pm   
99+
377.20 pm   
28

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

Lattice C/A Ratio
Not Available   
1.62   
2

Adjacent Atomic Numbers
  
  

Next Element
Cerium
  

Previous Element
Berkelium
  
Barium
  

Magnetic Properties

Electrical Properties
  
  

Resistivity
Not Available   
615.00 nΩ·m   
7

Electrical Conductivity
Not Available   
0.01 106/cm Ω   
99+

Electron Affinity
Not Available   
48.00 kJ/mol   
23

Electrical Property
Unknown   
?
Conductor metals have very low resistance to electric currents. They can easily conduct electric current through them.Conductor
  

Magnetic Characteristics
  
  

Specific Gravity
15.10   
13
6.17   
99+

Magnetic Ordering
?
Paramagnetic metals are slightly attracted by magnet, but they can’t retain the magnetic effect once they are removed from the magnetic field.Paramagnetic
  
?
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
Not Available   
0.19 J/(kg K)   
32

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

Critical Temperature
Not Available   
Not Available   

Molar Heat Capacity
Not Available   
27.11 J/mol·K   
21

Thermal Expansion
Not Available   
12.10 µm/(m·K)   
32

Standard Molar Entropy
Not Available   
56.90 J/mol.K   
23

Enthalpy
  
  

Enthalpy of Vaporization
Not Available   
399.60 kJ/mol   
17

Enthalpy of Fusion
Not Available   
6.20 kJ/mol   
99+

Enthalpy of Atomization
Not Available   
431.00 kJ/mol   
16

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