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Gallium Barium Comparison


Barium Gallium comparison


Periodic Table

Symbol
Ga   
Ba   

Group Number
13   
5
2   
16

Period Number
4   
6   

Block
p block   
s block   

Element Family
Post-​Transition   
Alkaline Earth   

CAS Number
7440553   
32
7440393   
99+

Space Group Name
Cmca   
Im_ 3m   

Space Group Number
64.00   
9
229.00   
1

Facts

Interesting Facts
  • 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.
  
  • Barium oxidizes very easily in the air.
  • All toxic compounds of Barium can easily dissolve in water.
  • Barium carbonate is used to produce a Rat poison and its other compound Barium nitrate is used in fireworks to produce green color.
  

Sources
Earth's crust, Found in Minerals, Mining, Ores of Minerals   
Earth's crust, Found in Minerals, Mining, Ores of Minerals   

History
  
  

Who Discovered
Lecoq de Boisbaudran   
Carl Wilhelm Scheele   

Discovery
In 1875   
In 1772   

Abundance
  
  

Abundance In Universe
1 * 10-6 %   
16
1 * 10-6 %   
16

Abundance In Sun
~0.000004 %   
16
~0.000001 %   
18

Abundance In Meteorites
0.00 %   
16
0.00 %   
20

Abundance In Earth's Crust
0.00 %   
24
0.03 %   
11

Abundance In Oceans
0.00 %   
22
0.00 %   
8

Abundance In Humans
Not Available   
0.00 %   
12

Uses

Uses & Benefits
  • 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.
  
  • It is sued in chemical paint manufacturing and glass manufacturing.
  • Compounds of this metal are toxic; but still the barium sulfate is insoluble and given to patients suffering from digestive disorder.
  

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

Medical Uses
Surgical Instruments Manufacturing   
NA   

Other Uses
Alloys   
Alloys   

Biological Properties
  
  

Toxicity
Non Toxic   
Low Toxic   

Present in Human Body
Yes   
Yes   

In Blood
0.08 Blood/mg dm-3   
13
0.07 Blood/mg dm-3   
15

In Bone
Not Available   
70.00 p.p.m.   
9

Physical Properties

Melting Point
29.78 °C   
99+
725.00 °C   
99+

Boiling Point
2,403.00 °C   
99+
1,140.00 °C   
99+

Appearance
  
  

Physical State
Solid   
Solid   

Color
Silvery White   
Silvery Gray   

Luster
Metallic   
NA   

Hardness
  
  

Mohs Hardness
1.50   
18
1.25   
19

Brinell Hardness
56.80 MPa   
99+
Not Available   

Speed of Sound
2,740.00 m/s   
31
1,620.00 m/s   
99+

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
Ga   
Ba   

Isotopes
  
  

Known Isotopes
24   
15
37   
2

Electronegativity
  
  

Pauling Electronegativity
1.81   
15
0.89   
99+

Sanderson Electronegativity
2.42   
2
0.68   
28

Allred Rochow Electronegativity
1.82   
1
0.97   
38

Mulliken-Jaffe Electronegativity
2.01   
5
0.88   
22

Allen Electronegativity
1.76   
14
0.88   
99+

Electropositivity
  
  

Pauling Electropositivity
2.19   
39
3.11   
4

Ionization Energies
  
  

1st Energy Level
578.80 kJ/mol   
99+
502.90 kJ/mol   
99+

2nd Energy Level
1,979.30 kJ/mol   
13
965.20 kJ/mol   
99+

3rd Energy Level
2,963.00 kJ/mol   
28
3,600.00 kJ/mol   
14

4th Energy Level
6,180.00 kJ/mol   
8
Not Available   

Electrochemical Equivalent
0.87 g/amp-hr   
99+
2.56 g/amp-hr   
20

Electron Work Function
4.20 eV   
23
2.70 eV   
99+

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

Atomic Properties

Atomic Number
31   
99+
56   
99+

Electron Configuration
[Ar] 3d10 4s2 4p1   
[Xe] 6s2   

Crystal Structure
Orthorhombic (ORTH)   
Body Centered Cubic (BCC)   

Crystal Lattice
ORTH-Crystal-Structure-of-Gallium.jpg#100   
BCC-Crystal-Structure-.jpg#100   

Atom
  
  

Number of Protons
31   
99+
56   
99+

Number of Neutrons
39   
99+
81   
99+

Number of Electrons
31   
99+
56   
99+

Radius of an Atom
  
  

Atomic Radius
135.00 pm   
99+
222.00 pm   
4

Covalent Radius
122.00 pm   
99+
215.00 pm   
5

Van der Waals Radius
187.00 pm   
32
268.00 pm   
6

Atomic Weight
69.72 amu   
99+
137.33 amu   
99+

Atomic Volume
11.80 cm3/mol   
99+
39.24 cm3/mol   
5

Adjacent Atomic Numbers
  
  

Previous Element
Zinc
  
Cesium
  

Next Element
Rubidium
  
Lanthanum
  

Valence Electron Potential
69.70 (-eV)   
19
21.30 (-eV)   
99+

Lattice Constant
451.97 pm   
18
502.80 pm   
15

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
5.91 g/cm3   
99+
3.51 g/cm3   
99+

Density When Liquid (at m.p.)
6.10 g/cm3   
99+
3.34 g/cm3   
99+

Tensile Strength
Not Available   
Not Available   

Viscosity
Not Available   
Not Available   

Vapor Pressure
  
  

Vapor Pressure at 1000 K
0.00 (Pa)   
15
7.11 (Pa)   
6

Elasticity properties
  
  

Shear Modulus
Not Available   
4.90 GPa   
99+

Bulk Modulus
Not Available   
9.60 GPa   
99+

Young's Modulus
9.80 GPa   
99+
13.00 GPa   
99+

Poisson Ratio
0.47   
1
Not Available   

Other Mechanical Properties
NA   
NA   

Magnetic Properties

Magnetic Characteristics
  
  

Specific Gravity
5.91   
99+
3.62   
99+

Magnetic Ordering
Diamagnetic   
Paramagnetic   

Electrical Properties
  
  

Electrical Property
Semiconductor   
Superconductor   

Resistivity
270.00 nΩ·m   
15
332.00 nΩ·m   
13

Electrical Conductivity
0.07 106/cm Ω   
29
0.03 106/cm Ω   
40

Electron Affinity
28.90 kJ/mol   
31
13.95 kJ/mol   
36

Thermal Properties

Specific Heat
0.37 J/(kg K)   
16
0.20 J/(kg K)   
30

Molar Heat Capacity
25.86 J/mol·K   
35
28.07 J/mol·K   
12

Thermal Conductivity
40.60 W/m·K   
34
18.40 W/m·K   
99+

Critical Temperature
Not Available   
Not Available   

Thermal Expansion
18.00 µm/(m·K)   
24
20.60 µm/(m·K)   
22

Enthalpy
  
  

Enthalpy of Vaporization
256.10 kJ/mol   
36
140.00 kJ/mol   
99+

Enthalpy of Fusion
5.59 kJ/mol   
99+
7.66 kJ/mol   
99+

Enthalpy of Atomization
276.10 kJ/mol   
39
175.70 kJ/mol   
99+

Standard Molar Entropy
40.80 J/mol.K   
38
62.50 J/mol.K   
20

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