Home
Compare Metals


Radium vs Magnesium


Magnesium vs Radium


Periodic Table

Symbol
Ra   
Mg   

Group Number
2   
16
2   
16

Period Number
7   
3   

Block
s block   
s block   

Element Family
Alkaline Earth   
Alkaline Earth   

CAS Number
7440144   
99+
7439954   
99+

Space Group Name
Im_ 3m   
P63/mmc   

Space Group Number
229.00   
1
194.00   
5

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.
  
  • Magnesium ions are present in every chlorophyll of every green plant .
  • Controlling Magnesium fire by pouring water on it will result in explosions.
  

Sources
Mining, Ores of metals   
By Electrolysis Process, In Ocean, Mining   

History
  
  

Who Discovered
Not Available   
Joseph Black   

Discovery
In 1898   
In 1755   

Abundance
  
  

Abundance In Universe
Not Available   
6 * 10-2 %   
2

Abundance In Sun
~-9999 %   
~0.07 %   
2

Abundance In Meteorites
Not Available   
12.00 %   
2

Abundance In Earth's Crust
0.00 %   
99+
2.90 %   
4

Abundance In Oceans
0.00 %   
99+
0.13 %   
2

Abundance In Humans
0.00 %   
20
0.03 %   
4

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.
  
  • Magnesium aluminum alloy improves the mechanical strength and welding characteristics and hence it is used in aeroplane and car manufacturing.
  • It is also used to remove sulfur from the molten iron and steel.
  

Industrial Uses
NA   
Aerospace Industry, Ammunition Industry, Automobile Industry, Chemical Industry, Pharmaceutical Industry   

Medical Uses
Pharmaceutical Industry   
NA   

Other Uses
NA   
Surgical Instruments Manufacturing   

Biological Properties
  
  

Toxicity
Highly Toxic   
Non Toxic   

Present in Human Body
No   
Yes   

In Blood
Not Available   
37.80 Blood/mg dm-3   
5

In Bone
Not Available   
1,800.00 p.p.m.   
4

Physical Properties

Melting Point
700.00 °C   
99+
650.00 °C   
99+

Boiling Point
1,737.00 °C   
99+
1,107.00 °C   
99+

Appearance
  
  

Physical State
Solid   
Solid   

Color
Silvery White   
Gray   

Luster
Metallic   
NA   

Hardness
  
  

Mohs Hardness
Not Available   
2.50   
14

Brinell Hardness
Not Available   
260.00 MPa   
36

Speed of Sound
Not Available   
4,940.00 m/s   
11

Optical Properties
  
  

Reflectivity
Not Available   
74.00 %   
7

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   
Mg   

Isotopes
  
  

Known Isotopes
33   
6
15   
24

Electronegativity
  
  

Pauling Electronegativity
0.90   
99+
1.31   
31

Sanderson Electronegativity
Not Available   
1.32   
18

Allred Rochow Electronegativity
0.97   
38
1.23   
25

Mulliken-Jaffe Electronegativity
0.92   
20
1.37   
16

Allen Electronegativity
0.89   
99+
1.29   
35

Electropositivity
  
  

Pauling Electropositivity
3.10   
5
2.69   
23

Ionization Energies
  
  

1st Energy Level
509.30 kJ/mol   
99+
737.70 kJ/mol   
24

2nd Energy Level
979.00 kJ/mol   
99+
1,450.70 kJ/mol   
99+

3rd Energy Level
Not Available   
7,732.70 kJ/mol   
5

4th Energy Level
Not Available   
10,542.50 kJ/mol   
4

5th Energy Level
Not Available   
13,630.00 kJ/mol   
3

6th Energy Level
Not Available   
18,020.00 kJ/mol   
3

7th Energy level
Not Available   
21,711.00 kJ/mol   
3

8th Energy Level
Not Available   
25,661.00 kJ/mol   
3

9th Energy Level
Not Available   
31,653.00 kJ/mol   
3

10th Energy Level
Not Available   
35,458.00 kJ/mol   
5

11th Energy Level
Not Available   
169,988.00 kJ/mol   
1

12th Energy Level
Not Available   
189,368.00 kJ/mol   
1

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

Electron Work Function
Not Available   
3.66 eV   
29

Other Chemical Properties
Ionization, Radioactive Isotopes, Radioactivity   
Corrosion, Highly Inflammable, Ionization, Solubility   

Atomic Properties

Atomic Number
88   
30
12   
99+

Electron Configuration
[Rn] 7s2   
[Ne] 3s2   

Crystal Structure
Body Centered Cubic (BCC)   
Hexagonal Close Packed (HCP)   

Crystal Lattice
BCC-Crystal-Structure-.jpg#100   
HCP-Crystal-Structure-of-Magnesium.jpg#100   

Atom
  
  

Number of Protons
88   
30
12   
99+

Number of Neutrons
138   
16
12   
99+

Number of Electrons
88   
30
12   
99+

Radius of an Atom
  
  

Atomic Radius
Not Available   
160.00 pm   
27

Covalent Radius
221.00 pm   
3
141.00 pm   
99+

Van der Waals Radius
283.00 pm   
4
173.00 pm   
37

Atomic Weight
226.00 amu   
26
24.31 amu   
99+

Atomic Volume
45.20 cm3/mol   
4
13.97 cm3/mol   
37

Adjacent Atomic Numbers
  
  

Previous Element
Francium
  
Sodium
  

Next Element
Actinium
  
Aluminium
  

Valence Electron Potential
20.10 (-eV)   
99+
40.00 (-eV)   
99+

Lattice Constant
514.80 pm   
13
320.94 pm   
99+

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

Lattice C/A Ratio
Not Available   
Not Available   

Mechanical Properties

Density
  
  

Density At Room Temperature
5.50 g/cm3   
99+
1.74 g/cm3   
99+

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

Tensile Strength
Not Available   
Not Available   

Viscosity
Not Available   
Not Available   

Vapor Pressure
  
  

Elasticity properties
  
  

Shear Modulus
Not Available   
17.00 GPa   
37

Bulk Modulus
Not Available   
45.00 GPa   
25

Young's Modulus
Not Available   
45.00 GPa   
39

Poisson Ratio
Not Available   
0.29   
15

Other Mechanical Properties
NA   
NA   

Magnetic Properties

Magnetic Characteristics
  
  

Specific Gravity
5.00   
99+
1.74   
99+

Magnetic Ordering
Nonmagnetic   
Paramagnetic   

Electrical Properties
  
  

Electrical Property
NA   
Conductor   

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

Electrical Conductivity
Not Available   
0.23 106/cm Ω   
7

Electron Affinity
Not Available   
0.00 kJ/mol   
40

Thermal Properties

Specific Heat
0.12 J/(kg K)   
40
1.02 J/(kg K)   
4

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

Thermal Conductivity
18.60 W/m·K   
99+
156.00 W/m·K   
8

Critical Temperature
Not Available   
Not Available   

Thermal Expansion
Not Available   
24.80 µm/(m·K)   
15

Enthalpy
  
  

Enthalpy of Vaporization
Not Available   
128.70 kJ/mol   
99+

Enthalpy of Fusion
Not Available   
8.95 kJ/mol   
39

Enthalpy of Atomization
163.00 kJ/mol   
99+
148.50 kJ/mol   
99+

Standard Molar Entropy
71.00 J/mol.K   
14
32.70 J/mol.K   
99+

Periodic Table >>
<< All

Compare All Metals

All Metals

All Metals


Compare All Metals