Home
Compare Metals


Actinium vs Beryllium


Beryllium vs Actinium


Periodic Table

Symbol
Ac   
Be   

Group Number
Not Available   
2   
16

Period Number
7   
2   

Block
f block   
s block   

Element Family
Actinide   
Alkaline Earth   

CAS Number
7440348   
99+
7440417   
99+

Space Group Name
Fm_ 3m   
P63/mmc   

Space Group Number
225.00   
2
194.00   
5

Facts

Interesting Facts
Not Available   
  • Beryllium is best anti corrosion metal.
  • Beryllium is the lightest metal and still it is stronger than steel.
  • It also finds various applications in Nuclear reactors as a reflector.
  

Sources
Obtained by Treating Radium with Neutrons, Ores of metals   
Earth's crust, Found in Minerals, Mining, Ores of metals, Ores of Minerals   

History
  
  

Who Discovered
Friedrich Oskar Giesel   
Louis Nicolas Vauquelin   

Discovery
In 1902   
In 1797   

Abundance
  
  

Abundance In Universe
Not Available   
1 * 10-7 %   
23

Abundance In Sun
~-9999 %   
~0.00000001 %   
29

Abundance In Meteorites
Not Available   
0.00 %   
99+

Abundance In Earth's Crust
Not Available   
0.00 %   
35

Abundance In Oceans
Not Available   
0.00 %   
39

Abundance In Humans
Not Available   
0.00 %   
19

Uses

Uses & Benefits
  • Actinium metal has a great source of alpha rays but it is hardly used outside research purpose.
  
  • Its alloys with copper or nickel are used in manufacturing Gyroscopes, springs, electrical contact and non sparking tools.
  • Beryllium Alloys are used as a material for aircraft, missiles, spacecraft and satellite.
  

Industrial Uses
NA   
Aerospace Industry, Ammunition Industry, Automobile Industry, Electrical Industry, Electronic Industry   

Medical Uses
NA   
NA   

Other Uses
Alloys, Nuclear Research, Research Purposes   
Alloys   

Biological Properties
  
  

Toxicity
Toxic   
Toxic   

Present in Human Body
No   
Yes   

In Blood
0.00 Blood/mg dm-3   
37
0.00 Blood/mg dm-3   
32

In Bone
0.00 p.p.m.   
36
0.00 p.p.m.   
32

Physical Properties

Melting Point
1,227.00 °C   
38
1,278.00 °C   
36

Boiling Point
3,200.00 °C   
26
2,970.00 °C   
32

Appearance
  
  

Physical State
Solid   
Solid   

Color
Silvery White   
White Gray   

Luster
NA   
Metallic   

Hardness
  
  

Mohs Hardness
Not Available   
5.50   
7

Brinell Hardness
Not Available   
590.00 MPa   
21

Vickers Hardness
Not Available   
1,670.00 MPa   
4

Speed of Sound
Not Available   
12,890.00 m/s   
2

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
Ac   
Be   

Isotopes
  
  

Known Isotopes
29   
10
9   
29

Electronegativity
  
  

Pauling Electronegativity
1.10   
99+
1.57   
24

Sanderson Electronegativity
Not Available   
1.81   
12

Allred Rochow Electronegativity
1.00   
36
1.47   
14

Mulliken-Jaffe Electronegativity
Not Available   
1.54   
12

Allen Electronegativity
Not Available   
1.58   
23

Electropositivity
  
  

Pauling Electropositivity
2.90   
10
2.43   
30

Ionization Energies
  
  

1st Energy Level
499.00 kJ/mol   
99+
899.50 kJ/mol   
7

2nd Energy Level
1,170.00 kJ/mol   
99+
1,757.10 kJ/mol   
23

3rd Energy Level
1,900.00 kJ/mol   
99+
14,848.70 kJ/mol   
2

4th Energy Level
4,700.00 kJ/mol   
23
21,006.60 kJ/mol   
2

Electrochemical Equivalent
2.82 g/amp-hr   
18
0.17 g/amp-hr   
99+

Electron Work Function
Not Available   
4.98 eV   
6

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

Atomic Properties

Atomic Number
89   
29
4   
99+

Electron Configuration
[Rn] 6d1 7s2   
[He] 2s2   

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

Crystal Lattice
FCC-Crystal-Structure-of-Actinium.jpg#100   
HCP-Crystal-Structure-of-Beryllium.jpg#100   

Atom
  
  

Number of Protons
89   
29
4   
99+

Number of Neutrons
138   
16
5   
99+

Number of Electrons
89   
29
4   
99+

Radius of an Atom
  
  

Atomic Radius
195.00 pm   
7
112.00 pm   
99+

Covalent Radius
Not Available   
96.00 pm   
99+

Van der Waals Radius
Not Available   
153.00 pm   
99+

Atomic Weight
227.00 amu   
25
9.01 amu   
99+

Atomic Volume
22.54 cm3/mol   
11
5.00 cm3/mol   
99+

Adjacent Atomic Numbers
  
  

Previous Element
Radium
  
Lithium
  

Next Element
Thorium
  
Sodium
  

Valence Electron Potential
38.60 (-eV)   
99+
82.00 (-eV)   
15

Lattice Constant
567.00 pm   
8
228.58 pm   
99+

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

Lattice C/A Ratio
Not Available   
1.57   
18

Mechanical Properties

Density
  
  

Density At Room Temperature
10.00 g/cm3   
37
1.85 g/cm3   
99+

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

Tensile Strength
Not Available   
Not Available   

Viscosity
Not Available   
Not Available   

Vapor Pressure
  
  

Vapor Pressure at 1000 K
Not Available   
0.00 (Pa)   
19

Elasticity properties
  
  

Shear Modulus
Not Available   
132.00 GPa   
7

Bulk Modulus
Not Available   
130.00 GPa   
13

Young's Modulus
Not Available   
287.00 GPa   
7

Poisson Ratio
Not Available   
0.03   
35

Other Mechanical Properties
NA   
NA   

Magnetic Properties

Magnetic Characteristics
  
  

Specific Gravity
10.07   
28
1.85   
99+

Magnetic Ordering
Paramagnetic   
Diamagnetic   

Electrical Properties
  
  

Electrical Property
Unknown   
Semiconductor   

Resistivity
Not Available   
36.00 nΩ·m   
99+

Electrical Conductivity
Not Available   
0.31 106/cm Ω   
5

Electron Affinity
Not Available   
0.00 kJ/mol   
40

Thermal Properties

Specific Heat
0.12 J/(kg K)   
40
1.82 J/(kg K)   
2

Molar Heat Capacity
27.20 J/mol·K   
18
16.44 J/mol·K   
99+

Thermal Conductivity
12.00 W/m·K   
99+
200.00 W/m·K   
6

Critical Temperature
Not Available   
Not Available   

Thermal Expansion
Not Available   
11.30 µm/(m·K)   
34

Enthalpy
  
  

Enthalpy of Vaporization
Not Available   
294.70 kJ/mol   
30

Enthalpy of Fusion
Not Available   
11.72 kJ/mol   
30

Enthalpy of Atomization
301.00 kJ/mol   
36
326.40 kJ/mol   
30

Standard Molar Entropy
56.50 J/mol.K   
25
9.50 J/mol.K   
99+

Periodic Table >>
<< All

Compare Actinide Series

Actinide Metals

Actinide Metals

» More Actinide Metals

Compare Actinide Series

» More Compare Actinide Series