Home
 Compare Metals

Radium vs Beryllium

Radium
Beryllium
Beryllium vs Radium


Periodic Table
Symbol
Ra  
Be  
Group Number
2  
16
2  
16
Period Number
7  
2  
Block
s block  
s block  
Element Family
Alkaline Earth  
Alkaline Earth  
CAS Number
7440144  
99+
7440417  
99+
Space Group Name
Im_ 3m  
P63/mmc  
Space Group Number
229.00  
2
194.00  
7
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.
  
  • 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
Mining, Ores of metals  
Earth's crust, Found in Minerals, Mining, Ores of metals, Ores of Minerals  
History
  
  
Who Discovered
-  
Louis Nicolas Vauquelin  
Discovery
In 1898  
In 1797  
Abundance
  
  
Abundance In Universe
0.00 %  
40
0.00 %  
24
Abundance In Sun
0.00 %  
26
0.00 %  
29
Abundance In Meteorites
-  
0.00 %  
99+
Abundance In Earth's Crust
0.00 %  
99+
0.00 %  
35
Abundance In Oceans
0.00 %  
99+
0.00 %  
39
Abundance In Humans
0.00 %  
23
0.00 %  
22
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.
  
  • 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
-  
Aerospace Industry, Ammunition Industry, Automobile Industry, Electrical Industry, Electronic Industry  
Medical Uses
Pharmaceutical Industry  
-  
Other Uses
-  
Alloys  
Biological Properties
  
  
Toxicity
Highly Toxic  
Toxic  
Present in Human Body
No  
Yes  
In Blood
0.00 Blood/mg dm-3  
34
0.00 Blood/mg dm-3  
35
In Bone
0.00 p.p.m.  
99+
0.00 p.p.m.  
37
Physical
Melting Point
700.00 °C  
99+
1,278.00 °C  
36
Boiling Point
1,737.00 °C  
99+
2,970.00 °C  
33
Appearance
  
  
Physical State
Solid  
Solid  
Color
Silvery White  
White Gray  
Luster
Metallic  
Metallic  
Hardness
  
  
Mohs Hardness
1.00  
22
5.50  
7
Brinell Hardness
700.00 MPa  
17
590.00 MPa  
25
Vickers Hardness
140.00 MPa  
99+
1,670.00 MPa  
9
Speed of Sound
3,150.00 m/s  
37
12,890.00 m/s  
2
Optical Properties
  
  
Refractive Index
1.00  
99+
1.56  
34
Reflectivity
83.00 %  
6
65.00 %  
18
Allotropes
No  
No  
α Allotropes
-  
-  
β Allotropes
-  
-  
γ Allotropes
-  
-  
Chemical
Chemical Formula
Ra  
Be  
Isotopes
  
  
Known Isotopes
33  
6
9  
29
Electronegativity
  
  
Pauling Electronegativity
0.90  
99+
1.57  
25
Sanderson Electronegativity
0.89  
99+
1.81  
15
Allred Rochow Electronegativity
0.97  
39
1.47  
15
Mulliken-Jaffe Electronegativity
0.92  
99+
1.54  
24
Allen Electronegativity
0.89  
99+
1.58  
26
Electropositivity
  
  
Pauling Electropositivity
3.10  
5
2.43  
30
Ionization Energies
  
  
1st Energy Level
509.30 kJ/mol  
99+
899.50 kJ/mol  
7
2nd Energy Level
979.00 kJ/mol  
99+
1,757.10 kJ/mol  
24
3rd Energy Level
509.30 kJ/mol  
99+
14,848.70 kJ/mol  
2
4th Energy Level
5,093.00 kJ/mol  
27
21,006.60 kJ/mol  
2
5th Energy Level
5,090.00 kJ/mol  
99+
2,970.00 kJ/mol  
99+
6th Energy Level
5,090.00 kJ/mol  
99+
1,470.00 kJ/mol  
99+
7th Energy level
5,090.00 kJ/mol  
99+
2,970.00 kJ/mol  
99+
8th Energy Level
5,090.00 kJ/mol  
99+
2,970.00 kJ/mol  
99+
9th Energy Level
5,090.00 kJ/mol  
99+
2,970.00 kJ/mol  
99+
10th Energy Level
5,090.00 kJ/mol  
99+
2,970.00 kJ/mol  
99+
11th Energy Level
5,090.00 kJ/mol  
99+
2,970.00 kJ/mol  
99+
12th Energy Level
5,090.00 kJ/mol  
99+
29,700.00 kJ/mol  
35
13th Energy Level
5,090.00 kJ/mol  
99+
2,970.00 kJ/mol  
99+
14th Energy Level
5,090.00 kJ/mol  
99+
2,970.00 kJ/mol  
99+
15th Energy Level
50,900.00 kJ/mol  
99+
89,900.00 kJ/mol  
5
16th Energy Level
50,900.00 kJ/mol  
99+
89,900.00 kJ/mol  
8
17th Energy Level
509.30 kJ/mol  
99+
2,970.00 kJ/mol  
14
18th Energy Level
5,090.00 kJ/mol  
99+
8,995.00 kJ/mol  
13
19th Energy Level
509.30 kJ/mol  
99+
899.50 kJ/mol  
22
20th Energy Level
509.00 kJ/mol  
99+
899.00 kJ/mol  
12
21st Energy Level
509.30 kJ/mol  
99+
2,970.00 kJ/mol  
26
22nd Energy Level
509.00 kJ/mol  
99+
899.00 kJ/mol  
10
23rd Energy Level
509.30 kJ/mol  
99+
2,970.00 kJ/mol  
31
24th Energy Level
509.30 kJ/mol  
99+
297.30 kJ/mol  
99+
25th Energy Level
509.00 kJ/mol  
99+
2,970.00 kJ/mol  
2
26th Energy Level
509.30 kJ/mol  
99+
2,970.00 kJ/mol  
2
27th Energy Level
509.30 kJ/mol  
99+
297.30 kJ/mol  
99+
28th Energy Level
509.30 kJ/mol  
99+
297.30 kJ/mol  
99+
29th Energy Level
509.30 kJ/mol  
99+
2,970.00 kJ/mol  
2
30th Energy Level
509.00 kJ/mol  
99+
2,970.00 kJ/mol  
2
Electrochemical Equivalent
4.22 g/amp-hr  
6
0.17 g/amp-hr  
99+
Electron Work Function
4.30 eV  
25
4.98 eV  
10
Other Chemical Properties
Ionization, Radioactive Isotopes, Radioactivity  
Corrosion, Ionization, Radioactive Isotopes  
Atomic
Atomic Number
88  
30
4  
99+
Electron Configuration
[Rn] 7s2  
[He] 2s2  
Crystal Structure
Body Centered Cubic (BCC)  
Hexagonal Close Packed (HCP)  
Crystal Lattice
BCC-Crystal-Structure-.jpg#100  
HCP-Crystal-Structure-of-Beryllium.jpg#100  
Atom
  
  
Number of Protons
88  
30
4  
99+
Number of Neutrons
138  
17
5  
99+
Number of Electrons
88  
30
4  
99+
Radius of an Atom
  
  
Atomic Radius
215.00 pm  
6
112.00 pm  
99+
Covalent Radius
221.00 pm  
3
96.00 pm  
99+
Van der Waals Radius
283.00 pm  
5
153.00 pm  
99+
Atomic Weight
226.00 amu  
26
9.01 amu  
99+
Atomic Volume
45.20 cm3/mol  
5
5.00 cm3/mol  
99+
Adjacent Atomic Numbers
  
  
Previous Element
Francium
  
Lithium
  
Next Element
Actinium
  
Sodium
  
Valence Electron Potential
20.10 (-eV)  
99+
82.00 (-eV)  
15
Lattice Constant
514.80 pm  
15
228.58 pm  
99+
Lattice Angles
π/2, π/2, π/2  
π/2, π/2, π/2  
Lattice C/A Ratio
1.57  
99+
1.57  
99+
Mechanical
Density
  
  
Density At Room Temperature
5.50 g/cm3  
99+
1.85 g/cm3  
99+
Density When Liquid (at m.p.)
5.50 g/cm3  
99+
1.69 g/cm3  
99+
Tensile Strength
40.00 MPa  
99+
287.00 MPa  
16
Viscosity
0.00  
2
0.00  
17
Vapor Pressure
  
  
Vapor Pressure at 1000 K
0.00 (Pa)  
16
0.00 (Pa)  
20
Vapor Pressure at 2000 K
0.00 (Pa)  
33
0.00 (Pa)  
24
Elasticity properties
  
  
Shear Modulus
25.00 GPa  
38
132.00 GPa  
7
Bulk Modulus
43.00 GPa  
33
130.00 GPa  
13
Young's Modulus
83.00 GPa  
25
287.00 GPa  
7
Poisson Ratio
0.31  
13
0.03  
36
Other Mechanical Properties
-  
-  
Magnetic
Magnetic Characteristics
  
  
Specific Gravity
5.00  
99+
1.85  
99+
Magnetic Ordering
Nonmagnetic  
Diamagnetic  
Permeability
0.00 H/m  
9
0.00 H/m  
12
Susceptibility
0.00  
18
0.00  
11
Electrical Properties
  
  
Electrical Property
-  
Semiconductor  
Resistivity
100.00 nΩ·m  
31
36.00 nΩ·m  
99+
Electrical Conductivity
0.00 106/cm Ω  
99+
0.31 106/cm Ω  
5
Electron Affinity
0.90 kJ/mol  
99+
0.00 kJ/mol  
99+
Thermal
Specific Heat
0.12 J/(kg K)  
99+
1.82 J/(kg K)  
2
Molar Heat Capacity
20.05 J/mol·K  
99+
16.44 J/mol·K  
99+
Thermal Conductivity
18.60 W/m·K  
99+
200.00 W/m·K  
6
Critical Temperature
973.00 K  
99+
1,551.00 K  
39
Thermal Expansion
8.50 µm/(m·K)  
99+
11.30 µm/(m·K)  
99+
Enthalpy
  
  
Enthalpy of Vaporization
113.00 kJ/mol  
99+
294.70 kJ/mol  
99+
Enthalpy of Fusion
8.60 kJ/mol  
99+
11.72 kJ/mol  
36
Enthalpy of Atomization
163.00 kJ/mol  
99+
326.40 kJ/mol  
40
Standard Molar Entropy
71.00 J/mol.K  
14
9.50 J/mol.K  
99+
Periodic Table >>
<< All

Compare Alkali Metals

Alkali Metals

Alkali Metals

» More Alkali Metals

Compare Alkali Metals

» More Compare Alkali Metals
Home | About | Contact | Disclaimer | Terms of use
© A softusvista inc. venture!