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Berkelium Magnesium Comparison


Magnesium Berkelium comparison


Periodic Table

Symbol
Bk   
Mg   

Group Number
Not Available   
2   
16

Period Number
7   
3   

Block
f block   
s block   

Element Family
Actinide   
Alkaline Earth   

CAS Number
7440406   
99+
7439954   
99+

Space Group Name
P63/mmc   
P63/mmc   

Space Group Number
194.00   
5
194.00   
5

Facts

Interesting Facts
  • X-ray Diffraction- different compounds of Berkelium metals are identified using it.
    Commercial uses of Berkelium metal are not yet discovered.
  
  • Magnesium ions are present in every chlorophyll of every green plant .
  • Controlling Magnesium fire by pouring water on it will result in explosions.
  

Sources
Bombarding Americium with Alpha Particles.   
By Electrolysis Process, In Ocean, Mining   

History
  
  

Who Discovered
Lawrence Berkeley National Laboratory   
Joseph Black   

Discovery
In 1949   
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
Not Available   
2.90 %   
4

Abundance In Oceans
Not Available   
0.13 %   
2

Abundance In Humans
Not Available   
0.03 %   
4

Uses

Uses & Benefits
  • This metal is very rare and has no commercial uses.
  
  • 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
NA   
NA   

Other Uses
NA   
Surgical Instruments Manufacturing   

Biological Properties
  
  

Toxicity
Unknown   
Non Toxic   

Present in Human Body
No   
Yes   

In Blood
0.00 Blood/mg dm-3   
37
37.80 Blood/mg dm-3   
5

In Bone
0.00 p.p.m.   
36
1,800.00 p.p.m.   
4

Physical Properties

Melting Point
986.00 °C   
99+
650.00 °C   
99+

Boiling Point
2,627.00 °C   
40
1,107.00 °C   
99+

Appearance
  
  

Physical State
Solid   
Solid   

Color
Silver   
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
Bk   
Mg   

Isotopes
  
  

Known Isotopes
14   
25
15   
24

Electronegativity
  
  

Pauling Electronegativity
1.30   
32
1.31   
31

Sanderson Electronegativity
Not Available   
1.32   
18

Allred Rochow Electronegativity
1.20   
27
1.23   
25

Mulliken-Jaffe Electronegativity
Not Available   
1.37   
16

Allen Electronegativity
2.70   
1
1.29   
35

Electropositivity
  
  

Pauling Electropositivity
2.70   
22
2.69   
23

Ionization Energies
  
  

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

2nd Energy Level
1,186.00 kJ/mol   
99+
1,450.70 kJ/mol   
99+

3rd Energy Level
2,152.00 kJ/mol   
99+
7,732.70 kJ/mol   
5

4th Energy Level
3,434.00 kJ/mol   
99+
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
3.07 g/amp-hr   
16
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
97   
21
12   
99+

Electron Configuration
[Rn] 5f9 7s2   
[Ne] 3s2   

Crystal Structure
Double Hexagonal Close Packed (DHCP)   
Hexagonal Close Packed (HCP)   

Crystal Lattice
DHCP-Crystal-Structure-of-Berkelium.jpg#100   
HCP-Crystal-Structure-of-Magnesium.jpg#100   

Atom
  
  

Number of Protons
97   
21
12   
99+

Number of Neutrons
150   
11
12   
99+

Number of Electrons
97   
21
12   
99+

Radius of an Atom
  
  

Atomic Radius
170.00 pm   
22
160.00 pm   
27

Covalent Radius
Not Available   
141.00 pm   
99+

Van der Waals Radius
Not Available   
173.00 pm   
37

Atomic Weight
247.00 amu   
18
24.31 amu   
99+

Atomic Volume
Not Available   
13.97 cm3/mol   
37

Adjacent Atomic Numbers
  
  

Previous Element
Curium
  
Sodium
  

Next Element
Aluminium
  

Valence Electron Potential
45.50 (-eV)   
36
40.00 (-eV)   
99+

Lattice Constant
341.60 pm   
99+
320.94 pm   
99+

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

Lattice C/A Ratio
Not Available   
Not Available   

Mechanical Properties

Density
  
  

Density At Room Temperature
14.78 g/cm3   
22
1.74 g/cm3   
99+

Density When Liquid (at m.p.)
13.25 g/cm3   
11
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
14.00   
14
1.74   
99+

Magnetic Ordering
Paramagnetic   
Paramagnetic   

Electrical Properties
  
  

Electrical Property
Conductor   
Conductor   

Resistivity
Not Available   
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
Not Available   
1.02 J/(kg K)   
4

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

Thermal Conductivity
10.00 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
Not Available   
148.50 kJ/mol   
99+

Standard Molar Entropy
Not Available   
32.70 J/mol.K   
99+

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