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Rutherfordium Actinium Comparison


Actinium Rutherfordium comparison


Periodic Table

Symbol
Rf   
Ac   

Group Number
4   
14
Not Available   

Period Number
7   
7   

Block
d block   
f block   

Element Family
Transition Metal   
Actinide   

CAS Number
53850365   
13
7440348   
99+

Space Group Name
Not Available   
Fm_ 3m   

Space Group Number
Not Available   
225.00   
2

Facts

Interesting Facts
  • Rutherfordium does not occur in nature as it is a synthetic element.
  • Till date Rutherfordium metal has 15 radioisotopes created synthetically.
  
Not Available   

Sources
Bombarding Plutonium with Accelerated 113 to 115 MeV Neon Ions, Synthetically Produced   
Obtained by Treating Radium with Neutrons, Ores of metals   

History
  
  

Who Discovered
Joint Institute for Nuclear Research   
Friedrich Oskar Giesel   

Discovery
In 1964   
In 1902   

Abundance
  
  

Uses

Uses & Benefits
  • Currently known uses of Rutherfordium metal are limited to research purpose only.
  
  • Actinium metal has a great source of alpha rays but it is hardly used outside research purpose.
  

Industrial Uses
NA   
NA   

Medical Uses
NA   
NA   

Other Uses
Alloys, Research Purposes   
Alloys, Nuclear Research, Research Purposes   

Biological Properties
  
  

Toxicity
Unknown   
Toxic   

Present in Human Body
No   
No   

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

In Bone
0.00 p.p.m.   
36
0.00 p.p.m.   
36

Physical Properties

Melting Point
2,100.00 °C   
11
1,227.00 °C   
38

Boiling Point
5,500.00 °C   
3
3,200.00 °C   
26

Appearance
  
  

Physical State
Solid   
Solid   

Color
Unknown   
Silvery White   

Luster
Unknown Luster   
NA   

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
Rf   
Ac   

Isotopes
  
  

Known Isotopes
13   
26
29   
10

Electronegativity
  
  

Pauling Electronegativity
Not Available   
1.10   
99+

Allred Rochow Electronegativity
Not Available   
1.00   
36

Electropositivity
  
  

Pauling Electropositivity
Not Available   
2.90   
10

Ionization Energies
  
  

1st Energy Level
579.90 kJ/mol   
99+
499.00 kJ/mol   
99+

2nd Energy Level
1,389.40 kJ/mol   
99+
1,170.00 kJ/mol   
99+

3rd Energy Level
2,296.40 kJ/mol   
99+
1,900.00 kJ/mol   
99+

4th Energy Level
3,077.90 kJ/mol   
99+
4,700.00 kJ/mol   
23

Electrochemical Equivalent
Not Available   
2.82 g/amp-hr   
18

Electron Work Function
Not Available   
Not Available   

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

Atomic Properties

Atomic Number
104   
14
89   
29

Electron Configuration
[Rn] 5f14 6d2 7s2   
[Rn] 6d1 7s2   

Crystal Structure
Hexagonal Close Packed (HCP)   
Face Centered Cubic (FCC)   

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

Atom
  
  

Number of Protons
104   
14
89   
29

Number of Neutrons
157   
7
138   
16

Number of Electrons
104   
14
89   
29

Radius of an Atom
  
  

Atomic Radius
150.00 pm   
33
195.00 pm   
7

Covalent Radius
157.00 pm   
31
Not Available   

Atomic Weight
267.00 amu   
11
227.00 amu   
25

Atomic Volume
Not Available   
22.54 cm3/mol   
11

Adjacent Atomic Numbers
  
  

Previous Element
Lawrencium
  
Radium
  

Next Element
Dubnium
  
Thorium
  

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

Lattice Constant
Not Available   
567.00 pm   
8

Lattice Angles
NA   
π/2, π/2, π/2   

Lattice C/A Ratio
Not Available   
Not Available   

Mechanical Properties

Density
  
  

Density At Room Temperature
23.20 g/cm3   
8
10.00 g/cm3   
37

Tensile Strength
Not Available   
Not Available   

Viscosity
Not Available   
Not Available   

Vapor Pressure
  
  

Elasticity properties
  
  

Poisson Ratio
Not Available   
Not Available   

Other Mechanical Properties
Unknown   
NA   

Magnetic Properties

Magnetic Characteristics
  
  

Specific Gravity
Not Available   
10.07   
28

Magnetic Ordering
Unknown   
Paramagnetic   

Electrical Properties
  
  

Thermal Properties

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

Molar Heat Capacity
Not Available   
27.20 J/mol·K   
18

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

Critical Temperature
Not Available   
Not Available   

Thermal Expansion
Not Available   
Not Available   

Enthalpy
  
  

Enthalpy of Atomization
Not Available   
301.00 kJ/mol   
36

Standard Molar Entropy
Not Available   
56.50 J/mol.K   
25

Summary >>
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