Barium vs Lithium
Periodic Table
Symbol
Ba
Li
Group Number
2
16
1
17
Period Number
6
2
Block
s block
s block
Element Family
Alkaline Earth
Alkali
CAS Number
7440393
99+
7439932
99+
Space Group Name
Im_ 3m
Im_ 3m
Space Group Number
229.00
1
229.00
1
Facts
Interesting Facts
- 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.
- Heat capacity of Lithium is very high.
- Lithium inflammable and highly explosive metal, hence it has to be stored properly.
Sources
Earth's crust, Found in Minerals, Mining, Ores of Minerals
Found in Minerals, Mining
History
Who Discovered
Carl Wilhelm Scheele
Johan August Arfwedson
Discovery
In 1772
In 1817
Abundance
Abundance In Universe
1 * 10-6 %
16
6 * 10-7 %
18
Abundance In Sun
~0.000001 %
18
~0.00017 %
11
Abundance In Meteorites
0.00 %
20
0.00 %
22
Abundance In Earth's Crust
0.03 %
11
0.00 %
99+
Abundance In Oceans
0.00 %
8
0.00 %
15
Abundance In Humans
0.00 %
12
0.00 %
16
Uses
Uses & Benefits
- 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.
- The main usage of Lithium is manufacturing rechargeable batteries for electronic equipment and gadgets.
- it is also used in manufacturing non-rechargeable batteries.
Industrial Uses
Ammunition Industry, Automobile Industry, Electrical Industry, Electronic Industry
Aerospace Industry, Electrical Industry, Electronic Industry
Medical Uses
NA
NA
Other Uses
Alloys
Alloys
Biological Properties
Toxicity
Low Toxic
NA
Present in Human Body
Yes
Yes
In Blood
0.07 Blood/mg dm-3
15
0.00 Blood/mg dm-3
27
In Bone
70.00 p.p.m.
9
1.30 p.p.m.
17
Physical Properties
Melting Point
725.00 °C
99+
180.54 °C
99+
Boiling Point
1,140.00 °C
99+
1,347.00 °C
99+
Appearance
Physical State
Solid
Solid
Color
Silvery Gray
Silvery White
Luster
NA
NA
Hardness
Mohs Hardness
1.25
19
0.60
21
Brinell Hardness
Not Available
5.00 MPa
99+
Speed of Sound
1,620.00 m/s
99+
6,000.00 m/s
3
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
Ba
Li
Isotopes
Known Isotopes
37
2
8
30
Electronegativity
Pauling Electronegativity
0.89
99+
0.98
99+
Sanderson Electronegativity
0.68
28
0.89
26
Allred Rochow Electronegativity
0.97
38
0.97
38
Mulliken-Jaffe Electronegativity
0.88
22
0.97
19
Allen Electronegativity
0.88
99+
0.91
99+
Electropositivity
Pauling Electropositivity
3.11
4
3.02
8
Ionization Energies
1st Energy Level
502.90 kJ/mol
99+
520.20 kJ/mol
99+
2nd Energy Level
965.20 kJ/mol
99+
7,298.10 kJ/mol
3
3rd Energy Level
3,600.00 kJ/mol
14
11,815.00 kJ/mol
4
Electrochemical Equivalent
2.56 g/amp-hr
20
0.26 g/amp-hr
99+
Electron Work Function
2.70 eV
99+
2.90 eV
37
Other Chemical Properties
Ionization, Radioactive Isotopes, Radioactivity, Solubility
Corrosion, Flammable, Ionization, Radioactive Isotopes
Atomic Properties
Atomic Number
56
99+
3
99+
Electron Configuration
[Xe] 6s2
[He] 2s1
Crystal Structure
Body Centered Cubic (BCC)
Body Centered Cubic (BCC)
Crystal Lattice
BCC-Crystal-Structure-.jpg#100
BCC-Crystal-Structure-.jpg#100
Atom
Number of Protons
56
99+
3
99+
Number of Neutrons
81
99+
4
99+
Number of Electrons
56
99+
3
99+
Radius of an Atom
Atomic Radius
222.00 pm
4
152.00 pm
31
Covalent Radius
215.00 pm
5
128.00 pm
99+
Van der Waals Radius
268.00 pm
6
182.00 pm
35
Atomic Weight
137.33 amu
99+
6.94 amu
99+
Atomic Volume
39.24 cm3/mol
5
13.10 cm3/mol
39
Adjacent Atomic Numbers
Valence Electron Potential
21.30 (-eV)
99+
19.00 (-eV)
99+
Lattice Constant
502.80 pm
15
351.00 pm
99+
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
3.51 g/cm3
99+
0.53 g/cm3
99+
Density When Liquid (at m.p.)
3.34 g/cm3
99+
0.51 g/cm3
99+
Tensile Strength
Not Available
Not Available
Viscosity
Not Available
Not Available
Vapor Pressure
Vapor Pressure at 1000 K
7.11 (Pa)
6
109.00 (Pa)
2
Elasticity properties
Shear Modulus
4.90 GPa
99+
4.20 GPa
99+
Bulk Modulus
9.60 GPa
99+
11.00 GPa
99+
Young's Modulus
13.00 GPa
99+
4.90 GPa
99+
Poisson Ratio
Not Available
Not Available
Other Mechanical Properties
NA
NA
Magnetic Properties
Magnetic Characteristics
Specific Gravity
3.62
99+
0.53
99+
Magnetic Ordering
Paramagnetic
Paramagnetic
Electrical Properties
Electrical Property
Superconductor
Conductor
Resistivity
332.00 nΩ·m
13
92.80 nΩ·m
33
Electrical Conductivity
0.03 106/cm Ω
40
0.11 106/cm Ω
19
Electron Affinity
13.95 kJ/mol
36
59.60 kJ/mol
16
Thermal Properties
Specific Heat
0.20 J/(kg K)
30
3.60 J/(kg K)
1
Molar Heat Capacity
28.07 J/mol·K
12
24.86 J/mol·K
99+
Thermal Conductivity
18.40 W/m·K
99+
84.80 W/m·K
20
Critical Temperature
Not Available
3,223.00 K
1
Thermal Expansion
20.60 µm/(m·K)
22
46.00 µm/(m·K)
7
Enthalpy
Enthalpy of Vaporization
140.00 kJ/mol
99+
134.70 kJ/mol
99+
Enthalpy of Fusion
7.66 kJ/mol
99+
3.00 kJ/mol
99+
Enthalpy of Atomization
175.70 kJ/mol
99+
160.70 kJ/mol
99+
Standard Molar Entropy
62.50 J/mol.K
20
29.10 J/mol.K
99+
|
||
|
||
|
