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Properties of Radium and Plutonium


Properties of Plutonium & Radium


Physical Properties

Melting Point
700.00 °C   
99+
639.50 °C   
99+

Boiling Point
1,737.00 °C   
99+
3,235.00 °C   
24

Hardness
  
  

Mohs Hardness
Not Available   
Not Available   

Brinell Hardness
Not Available   
Not Available   

Vickers Hardness
Not Available   
Not Available   

Optical Properties
  
  

Refractive Index
Not Available   
Not Available   

Reflectivity
Not Available   
Not Available   

Speed of Sound
Not Available   
2,260.00 m/s   
99+

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
Ra   
Pu   

Isotopes
  
  

Known Isotopes
33   
6
20   
19

Electronegativity
  
  

Pauling Electronegativity
0.90   
99+
1.28   
33

Sanderson Electronegativity
Not Available   
Not Available   

Allred Rochow Electronegativity
0.97   
38
1.22   
26

Mulliken-Jaffe Electronegativity
0.92   
20
Not Available   

Allen Electronegativity
0.89   
99+
Not Available   

Electropositivity
  
  

Pauling Electropositivity
3.10   
5
2.72   
21

Ionization Energies
  
  

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

2nd Energy Level
979.00 kJ/mol   
99+
1,128.00 kJ/mol   
99+

3rd Energy Level
Not Available   
2,084.00 kJ/mol   
99+

Electrochemical Equivalent
4.22 g/amp-hr   
6
2.28 g/amp-hr   
22

Electron Work Function
Not Available   
Not Available   

Other Chemical Properties
?
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
  
?
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
  

Mechanical Properties

Density
  
  

Density At Room Temperature
5.50 g/cm3   
99+
19.82 g/cm3   
13

Density When Liquid (at m.p.)
Not Available   
16.63 g/cm3   
8

Vapor Pressure
  
  

Vapor Pressure at 1000 K
Not Available   
0.00 (Pa)   
26

Vapor Pressure at 2000 K
Not Available   
2.20 (Pa)   
12

Tensile Strength
Not Available   
Not Available   

Viscosity
Not Available   
Not Available   

Elasticity properties
  
  

Shear Modulus
Not Available   
43.00 GPa   
18

Bulk Modulus
Not Available   
Not Available   

Young's Modulus
Not Available   
96.00 GPa   
21

Poisson Ratio
Not Available   
0.21   
32

Other Mechanical Properties
NA   
?
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, 
?
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
  

Periodic Table

Symbol
Ra   
Pu   

Group Number
2   
16
0   
18

Period Number
7   
7   

Block
?
The s-block is on the left side of the periodic table that includes elements from the first two columns, the alkali metals (group 1) and alkaline earth metals (group 2), plus helium.s 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
?
All alkaline earth metals are placed under group number 2 and s-block of periodic table. These metals are somewhat reactive at standard conditions. Alkaline earth metals appear shiny, silvery-white and are found in the earth’s crust.Alkaline Earth
  
?
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
88   
30
94   
24

Atomic Weight
226.00 amu   
26
244.00 amu   
19

Atomic Volume
45.20 cm3/mol   
4
12.32 cm3/mol   
99+

Electron Configuration
[Rn] 7s2   
[Rn] 5f6 7s2   

Valence Electron Potential
20.10 (-eV)   
99+
64.90 (-eV)   
21

Atom
  
  

Number of Protons
88   
30
94   
24

Number of Neutrons
138   
16
150   
11

Number of Electrons
88   
30
94   
24

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)
  
?
The mono-clinic crystal structure is one of the seven lattice point groups. Here vectors of crystal have unequal lengths. Here vectors of crystal have unequal lengths and have two vectors perpendicular to the 3rd oneMonoclinic (MON)
  

Crystal Lattice
BCC-Crystal-Structure-.jpg#100   
MON-Crystal-Structure-of-Plutonium.jpg#100   

Radius of an Atom
  
  

Atomic Radius
Not Available   
159.00 pm   
28

Covalent Radius
221.00 pm   
3
187.00 pm   
20

Van der Waals Radius
283.00 pm   
4
200.00 pm   
28

Lattice Constant
514.80 pm   
13
618.30 pm   
4

Lattice Angles
π/2, π/2, π/2   
NA   

Lattice C/A Ratio
Not Available   
Not Available   

Adjacent Atomic Numbers
  
  

Next Element
Actinium
  
Americium
  

Previous Element
Francium
  
Neptunium
  

Magnetic Properties

Electrical Properties
  
  

Resistivity
100.00 nΩ·m   
31
1.46 nΩ·m   
99+

Electrical Conductivity
Not Available   
0.01 106/cm Ω   
99+

Electron Affinity
Not Available   
Not Available   

Electrical Property
NA   
?
Poor conductor metals have moderate resistance to electric currents. They can conduct electric current through them with very low efficiency.Poor Conductor
  

Magnetic Characteristics
  
  

Specific Gravity
5.00   
99+
19.84   
7

Magnetic Ordering
?
Nonmagnetic metals are non magnetic in nature and do not show or exhibit any magnetic properties.Nonmagnetic
  
?
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
0.12 J/(kg K)   
40
0.13 J/(kg K)   
39

Thermal Conductivity
18.60 W/m·K   
99+
6.74 W/m·K   
99+

Critical Temperature
Not Available   
Not Available   

Molar Heat Capacity
Not Available   
35.50 J/mol·K   
3

Thermal Expansion
Not Available   
46.70 µm/(m·K)   
6

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

Enthalpy
  
  

Enthalpy of Vaporization
Not Available   
344.00 kJ/mol   
25

Enthalpy of Fusion
Not Available   
2.82 kJ/mol   
99+

Enthalpy of Atomization
163.00 kJ/mol   
99+
360.00 kJ/mol   
26

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