Home
 Compare Metals

Radium vs Gallium

Radium
Gallium
Gallium vs Radium


Periodic Table
Symbol
Ra  
Ga  
Group Number
2  
16
13  
5
Period Number
7  
4  
Block
s block  
p block  
Element Family
Alkaline Earth  
Post-​Transition  
CAS Number
7440144  
99+
7440553  
32
Space Group Name
Im_ 3m  
Cmca  
Space Group Number
229.00  
1
64.00  
9
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.
  
  • A gram of Gallium metal can be bought for only three dollars.
  • Gallium metal found in ores of following things Coal, Bauxite, Diaspore, Sphalerite, Germanite and Zinc.
  
Sources
Mining, Ores of metals  
Earth's crust, Found in Minerals, Mining, Ores of Minerals  
History
  
  
Who Discovered
Not Available  
Lecoq de Boisbaudran  
Discovery
In 1898  
In 1875  
Abundance
  
  
Abundance In Universe
Not Available  
1 * 10-6 %  
16
Abundance In Sun
~-9999 %  
~0.000004 %  
16
Abundance In Meteorites
Not Available  
0.00 %  
16
Abundance In Earth's Crust
0.00 %  
99+
0.00 %  
24
Abundance In Oceans
0.00 %  
99+
0.00 %  
22
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.
  
  • Gallium arsenide is a very important component of many semiconductors and led manufacturing.
  • Gallium nitride is also know as a semiconductor and it is used in Blu-ray technology, mobile smartphones and LED.
  
Industrial Uses
NA  
Electrical Industry, Electronic Industry  
Medical Uses
Pharmaceutical Industry  
Surgical Instruments Manufacturing  
Other Uses
NA  
Alloys  
Biological Properties
  
  
Toxicity
Highly Toxic  
Non Toxic  
Present in Human Body
No  
Yes  
In Blood
Not Available  
0.08 Blood/mg dm-3  
13
Physical Properties
Melting Point
700.00 °C  
99+
29.78 °C  
99+
Boiling Point
1,737.00 °C  
99+
2,403.00 °C  
99+
Appearance
  
  
Physical State
Solid  
Solid  
Color
Silvery White  
Silvery White  
Luster
Metallic  
Metallic  
Hardness
  
  
Mohs Hardness
Not Available  
1.50  
18
Brinell Hardness
Not Available  
56.80 MPa  
99+
Speed of Sound
Not Available  
2,740.00 m/s  
31
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  
Ga  
Isotopes
  
  
Known Isotopes
33  
6
24  
15
Electronegativity
  
  
Pauling Electronegativity
0.90  
99+
1.81  
15
Sanderson Electronegativity
Not Available  
2.42  
2
Allred Rochow Electronegativity
0.97  
38
1.82  
1
Mulliken-Jaffe Electronegativity
0.92  
20
2.01  
5
Allen Electronegativity
0.89  
99+
1.76  
14
Electropositivity
  
  
Pauling Electropositivity
3.10  
5
2.19  
39
Ionization Energies
  
  
1st Energy Level
509.30 kJ/mol  
99+
578.80 kJ/mol  
99+
2nd Energy Level
979.00 kJ/mol  
99+
1,979.30 kJ/mol  
13
3rd Energy Level
Not Available  
2,963.00 kJ/mol  
28
4th Energy Level
Not Available  
6,180.00 kJ/mol  
8
Electrochemical Equivalent
4.22 g/amp-hr  
6
0.87 g/amp-hr  
99+
Electron Work Function
Not Available  
4.20 eV  
23
Other Chemical Properties
Ionization, Radioactive Isotopes, Radioactivity  
Ionization, Radioactive Isotopes  
Atomic Properties
Atomic Number
88  
30
31  
99+
Electron Configuration
[Rn] 7s2  
[Ar] 3d10 4s2 4p1  
Crystal Structure
Body Centered Cubic (BCC)  
Orthorhombic (ORTH)  
Crystal Lattice
BCC-Crystal-Structure-.jpg#100  
ORTH-Crystal-Structure-of-Gallium.jpg#100  
Atom
  
  
Number of Protons
88  
30
31  
99+
Number of Neutrons
138  
16
39  
99+
Number of Electrons
88  
30
31  
99+
Radius of an Atom
  
  
Atomic Radius
Not Available  
135.00 pm  
99+
Covalent Radius
221.00 pm  
3
122.00 pm  
99+
Van der Waals Radius
283.00 pm  
4
187.00 pm  
32
Atomic Weight
226.00 amu  
26
69.72 amu  
99+
Atomic Volume
45.20 cm3/mol  
4
11.80 cm3/mol  
99+
Adjacent Atomic Numbers
  
  
Previous Element
Francium
  
Zinc
  
Next Element
Actinium
  
Rubidium
  
Valence Electron Potential
20.10 (-eV)  
99+
69.70 (-eV)  
19
Lattice Constant
514.80 pm  
13
451.97 pm  
18
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+
5.91 g/cm3  
99+
Density When Liquid (at m.p.)
Not Available  
6.10 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)  
15
Elasticity properties
  
  
Young's Modulus
Not Available  
9.80 GPa  
99+
Poisson Ratio
Not Available  
0.47  
1
Other Mechanical Properties
NA  
NA  
Magnetic Properties
Magnetic Characteristics
  
  
Specific Gravity
5.00  
99+
5.91  
99+
Magnetic Ordering
Nonmagnetic  
Diamagnetic  
Electrical Properties
  
  
Electrical Property
NA  
Semiconductor  
Resistivity
100.00 nΩ·m  
31
270.00 nΩ·m  
15
Electrical Conductivity
Not Available  
0.07 106/cm Ω  
29
Electron Affinity
Not Available  
28.90 kJ/mol  
31
Thermal Properties
Specific Heat
0.12 J/(kg K)  
40
0.37 J/(kg K)  
16
Molar Heat Capacity
Not Available  
25.86 J/mol·K  
35
Thermal Conductivity
18.60 W/m·K  
99+
40.60 W/m·K  
34
Critical Temperature
Not Available  
Not Available  
Thermal Expansion
Not Available  
18.00 µm/(m·K)  
24
Enthalpy
  
  
Enthalpy of Vaporization
Not Available  
256.10 kJ/mol  
36
Enthalpy of Fusion
Not Available  
5.59 kJ/mol  
99+
Enthalpy of Atomization
163.00 kJ/mol  
99+
276.10 kJ/mol  
39
Standard Molar Entropy
71.00 J/mol.K  
14
40.80 J/mol.K  
38
Periodic Table >>
<< All

Compare All Metals

All Metals

All Metals

Compare All Metals

Home | About | Contact | Disclaimer | Terms of use
© A softusvista inc. venture!