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Lithium Sodium Comparison


Sodium Lithium comparison


Periodic Table

Symbol
Li   
Na   

Group Number
1   
17
1   
17

Period Number
2   
3   

Block
s block   
s block   

Element Family
Alkali   
Alkali   

CAS Number
7439932   
99+
7440235   
99+

Space Group Name
Im_ 3m   
Im_ 3m   

Space Group Number
229.00   
1
229.00   
1

Facts

Interesting Facts
  • Heat capacity of Lithium is very high.
  • Lithium inflammable and highly explosive metal, hence it has to be stored properly.
  
  • At room temperature Sodium metal is very soft as it can be chopped down into pieces with butter knife.
  • The most common compound of Sodium is NaCl (Salt).
  

Sources
Found in Minerals, Mining   
By Electrolysis Process, Mining   

History
  
  

Who Discovered
Johan August Arfwedson   
Humphry Davy   

Discovery
In 1817   
In 1807   

Abundance
  
  

Abundance In Universe
6 * 10-7 %   
18
2 * 10-3 %   
6

Abundance In Sun
~0.00017 %   
11
~0.004 %   
6

Abundance In Meteorites
0.00 %   
22
0.55 %   
6

Abundance In Earth's Crust
0.00 %   
99+
2.30 %   
5

Abundance In Oceans
0.00 %   
15
1.10 %   
1

Abundance In Humans
0.00 %   
16
0.14 %   
3

Uses

Uses & Benefits
  • The main usage of Lithium is manufacturing rechargeable batteries for electronic equipment and gadgets.
  • it is also used in manufacturing non-rechargeable batteries.
  
  • In some nuclear reactors sodium is used as a heat exchanger.
  • Compound of Sodium metals called Salt (Sodium chloride) is used in Food.
  

Industrial Uses
Aerospace Industry, Electrical Industry, Electronic Industry   
Electrical Industry, Electronic Industry   

Medical Uses
NA   
Pharmaceutical Industry   

Other Uses
Alloys   
Alloys   

Biological Properties
  
  

Toxicity
NA   
Toxic   

Present in Human Body
Yes   
Yes   

In Blood
0.00 Blood/mg dm-3   
27
1,970.00 Blood/mg dm-3   
1

In Bone
1.30 p.p.m.   
17
10,000.00 p.p.m.   
2

Physical Properties

Melting Point
180.54 °C   
99+
97.72 °C   
99+

Boiling Point
1,347.00 °C   
99+
883.00 °C   
99+

Appearance
  
  

Physical State
Solid   
Solid   

Color
Silvery White   
Silvery White   

Luster
NA   
Metallic   

Hardness
  
  

Mohs Hardness
0.60   
21
0.50   
22

Brinell Hardness
5.00 MPa   
99+
0.69 MPa   
99+

Speed of Sound
6,000.00 m/s   
3
3,200.00 m/s   
24

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
Li   
Na   

Isotopes
  
  

Known Isotopes
8   
30
17   
22

Electronegativity
  
  

Pauling Electronegativity
0.98   
99+
0.93   
99+

Sanderson Electronegativity
0.89   
26
0.56   
30

Allred Rochow Electronegativity
0.97   
38
1.01   
35

Mulliken-Jaffe Electronegativity
0.97   
19
0.91   
21

Allen Electronegativity
0.91   
99+
0.87   
99+

Electropositivity
  
  

Pauling Electropositivity
3.02   
8
3.07   
6

Ionization Energies
  
  

1st Energy Level
520.20 kJ/mol   
99+
495.80 kJ/mol   
99+

2nd Energy Level
7,298.10 kJ/mol   
3
4,562.00 kJ/mol   
4

3rd Energy Level
11,815.00 kJ/mol   
4
6,910.30 kJ/mol   
6

4th Energy Level
Not Available   
9,543.00 kJ/mol   
5

5th Energy Level
Not Available   
13,354.00 kJ/mol   
4

6th Energy Level
Not Available   
16,613.00 kJ/mol   
4

7th Energy level
Not Available   
20,117.00 kJ/mol   
4

8th Energy Level
Not Available   
25,496.00 kJ/mol   
4

9th Energy Level
Not Available   
28,932.00 kJ/mol   
4

10th Energy Level
Not Available   
141,362.00 kJ/mol   
2

11th Energy Level
Not Available   
159,076.00 kJ/mol   
2

Electrochemical Equivalent
0.26 g/amp-hr   
99+
0.86 g/amp-hr   
99+

Electron Work Function
2.90 eV   
37
2.75 eV   
40

Other Chemical Properties
Corrosion, Flammable, Ionization, Radioactive Isotopes   
Chemical Stability, Corrosion, Flammability, Ionization, Solubility   

Atomic Properties

Atomic Number
3   
99+
11   
99+

Electron Configuration
[He] 2s1   
[Ne] 3s1   

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
3   
99+
11   
99+

Number of Neutrons
4   
99+
12   
99+

Number of Electrons
3   
99+
11   
99+

Radius of an Atom
  
  

Atomic Radius
152.00 pm   
31
186.00 pm   
9

Covalent Radius
128.00 pm   
99+
166.00 pm   
27

Van der Waals Radius
182.00 pm   
35
227.00 pm   
21

Atomic Weight
6.94 amu   
99+
22.99 amu   
99+

Atomic Volume
13.10 cm3/mol   
39
23.70 cm3/mol   
10

Adjacent Atomic Numbers
  
  

Previous Element
No Previous Element   
Beryllium
  

Next Element
Beryllium
  
Magnesium
  

Valence Electron Potential
19.00 (-eV)   
99+
14.10 (-eV)   
99+

Lattice Constant
351.00 pm   
99+
429.06 pm   
19

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
0.53 g/cm3   
99+
0.97 g/cm3   
99+

Density When Liquid (at m.p.)
0.51 g/cm3   
99+
0.93 g/cm3   
99+

Tensile Strength
Not Available   
Not Available   

Viscosity
Not Available   
Not Available   

Vapor Pressure
  
  

Vapor Pressure at 1000 K
109.00 (Pa)   
2
Not Available   

Elasticity properties
  
  

Shear Modulus
4.20 GPa   
99+
3.30 GPa   
99+

Bulk Modulus
11.00 GPa   
99+
6.30 GPa   
99+

Young's Modulus
4.90 GPa   
99+
10.00 GPa   
99+

Poisson Ratio
Not Available   
Not Available   

Other Mechanical Properties
NA   
NA   

Magnetic Properties

Magnetic Characteristics
  
  

Specific Gravity
0.53   
99+
0.97   
99+

Magnetic Ordering
Paramagnetic   
Paramagnetic   

Electrical Properties
  
  

Electrical Property
Conductor   
Conductor   

Resistivity
92.80 nΩ·m   
33
47.70 nΩ·m   
99+

Electrical Conductivity
0.11 106/cm Ω   
19
0.21 106/cm Ω   
9

Electron Affinity
59.60 kJ/mol   
16
52.80 kJ/mol   
19

Thermal Properties

Specific Heat
3.60 J/(kg K)   
1
1.23 J/(kg K)   
3

Molar Heat Capacity
24.86 J/mol·K   
99+
28.23 J/mol·K   
10

Thermal Conductivity
84.80 W/m·K   
20
142.00 W/m·K   
11

Critical Temperature
3,223.00 K   
1
2,573.00 K   
2

Thermal Expansion
46.00 µm/(m·K)   
7
71.00 µm/(m·K)   
4

Enthalpy
  
  

Enthalpy of Vaporization
134.70 kJ/mol   
99+
89.04 kJ/mol   
99+

Enthalpy of Fusion
3.00 kJ/mol   
99+
2.59 kJ/mol   
99+

Enthalpy of Atomization
160.70 kJ/mol   
99+
108.40 kJ/mol   
99+

Standard Molar Entropy
29.10 J/mol.K   
99+
51.30 J/mol.K   
28

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