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Radium vs Uranium


Uranium vs Radium


Periodic Table

Symbol
Ra   
U   

Group Number
2   
16
0   
18

Period Number
7   
7   

Block
s block   
f block   

Element Family
Alkaline Earth   
Actinide   

CAS Number
7440144   
99+
7440611   
28

Space Group Name
Im_ 3m   
Cmcm   

Space Group Number
229.00   
1
63.00   
10

Facts

Interesting Facts
  • Radium metal is the heaviest metal of Alkaline earth metals column.
  • Radium metal is highly radioactive and does not have any stable isotopes.
  
  • Major mining countries of Uranium include Russia, Australia, Namibia, Canada and Niger and total 33% Uranium are mine in Kazakhstan.
  

Sources
Mining, Ores of metals   
Earth's crust, Mining, Ores of Minerals   

History
  
  

Who Discovered
Not Available   
Not Available   

Discovery
In 1898   
In 1789   

Abundance
  
  

Abundance In Universe
Not Available   
2 * 10-8 %   
29

Abundance In Sun
~-9999 %   
~0.0000001 %   
26

Abundance In Meteorites
Not Available   
0.00 %   
99+

Abundance In Earth's Crust
0.00 %   
99+
0.00 %   
36

Abundance In Oceans
0.00 %   
99+
0.00 %   
11

Abundance In Humans
0.00 %   
20
Not Available   

Uses

Uses & Benefits
  • It is a highly radioactive metal; and sometime Radium-223 is used to treat prostate cancer.
  • It is used in luminous paints.
  
  • The main use of this metal include nuclear fuel which is used to generate electricity yin nuclear power stations.
  • Synthetic elements like transuranium are made from Uranium metal.
  

Industrial Uses
NA   
Ammunition Industry, Chemical Industry   

Medical Uses
Pharmaceutical Industry   
NA   

Other Uses
NA   
Alloys, Jewellery, Nuclear Reactor's Fuel, Sculptures, Statues   

Biological Properties
  
  

Toxicity
Highly Toxic   
Toxic   

Present in Human Body
No   
No   

Physical Properties

Melting Point
700.00 °C   
99+
1,132.00 °C   
39

Boiling Point
1,737.00 °C   
99+
3,818.00 °C   
16

Appearance
  
  

Physical State
Solid   
Solid   

Color
Silvery White   
Silvery Gray   

Luster
Metallic   
Metallic   

Hardness
  
  

Mohs Hardness
Not Available   
6.00   
6

Brinell Hardness
Not Available   
2,350.00 MPa   
2

Vickers Hardness
Not Available   
1,960.00 MPa   
2

Speed of Sound
Not Available   
3,155.00 m/s   
25

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
Ra   
U   

Isotopes
  
  

Known Isotopes
33   
6
25   
14

Electronegativity
  
  

Pauling Electronegativity
0.90   
99+
1.38   
28

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
2.62   
26

Ionization Energies
  
  

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

2nd Energy Level
979.00 kJ/mol   
99+
1,420.00 kJ/mol   
99+

3rd Energy Level
Not Available   
1,900.00 kJ/mol   
99+

4th Energy Level
Not Available   
3,145.00 kJ/mol   
99+

Electrochemical Equivalent
4.22 g/amp-hr   
6
1.48 g/amp-hr   
99+

Electron Work Function
Not Available   
3.63 eV   
30

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

Atomic Properties

Atomic Number
88   
30
92   
26

Electron Configuration
[Rn] 7s2   
[Rn] 5f3 6d1 7s2   

Crystal Structure
Body Centered Cubic (BCC)   
Orthorhombic (ORTH)   

Crystal Lattice
BCC-Crystal-Structure-.jpg#100   
ORTH-Crystal-Structure-of-Uranium.jpg#100   

Atom
  
  

Number of Protons
88   
30
92   
26

Number of Neutrons
138   
16
146   
13

Number of Electrons
88   
30
92   
26

Radius of an Atom
  
  

Atomic Radius
Not Available   
156.00 pm   
29

Covalent Radius
221.00 pm   
3
196.00 pm   
14

Van der Waals Radius
283.00 pm   
4
186.00 pm   
33

Atomic Weight
226.00 amu   
26
238.03 amu   
21

Atomic Volume
45.20 cm3/mol   
4
12.59 cm3/mol   
40

Adjacent Atomic Numbers
  
  

Previous Element
Francium
  

Next Element
Actinium
  
Neptunium
  

Valence Electron Potential
20.10 (-eV)   
99+
170.00 (-eV)   
4

Lattice Constant
514.80 pm   
13
295.08 pm   
99+

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

Lattice C/A Ratio
Not Available   
Not Available   

Mechanical Properties

Density
  
  

Density At Room Temperature
5.50 g/cm3   
99+
19.10 g/cm3   
17

Density When Liquid (at m.p.)
Not Available   
17.30 g/cm3   
7

Tensile Strength
Not Available   
Not Available   

Viscosity
Not Available   
Not Available   

Vapor Pressure
  
  

Vapor Pressure at 2000 K
Not Available   
0.01 (Pa)   
20

Elasticity properties
  
  

Shear Modulus
Not Available   
111.00 GPa   
10

Bulk Modulus
Not Available   
100.00 GPa   
16

Young's Modulus
Not Available   
208.00 GPa   
10

Poisson Ratio
Not Available   
0.23   
30

Other Mechanical Properties
NA   
Ductile, Malleable   

Magnetic Properties

Magnetic Characteristics
  
  

Specific Gravity
5.00   
99+
18.80   
10

Magnetic Ordering
Nonmagnetic   
Paramagnetic   

Electrical Properties
  
  

Electrical Property
NA   
Poor Conductor   

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

Electrical Conductivity
Not Available   
0.04 106/cm Ω   
37

Thermal Properties

Specific Heat
0.12 J/(kg K)   
40
0.12 J/(kg K)   
40

Molar Heat Capacity
Not Available   
27.67 J/mol·K   
15

Thermal Conductivity
18.60 W/m·K   
99+
27.50 W/m·K   
40

Critical Temperature
Not Available   
Not Available   

Thermal Expansion
Not Available   
13.90 µm/(m·K)   
27

Enthalpy
  
  

Enthalpy of Vaporization
Not Available   
477.00 kJ/mol   
13

Enthalpy of Fusion
Not Available   
15.48 kJ/mol   
19

Enthalpy of Atomization
163.00 kJ/mol   
99+
489.50 kJ/mol   
14

Standard Molar Entropy
71.00 J/mol.K   
14
50.20 J/mol.K   
31

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