Mendelevium vs Lithium
Periodic Table
Symbol
Md
Li
Group Number
Not Available
1
17
Period Number
7
2
Block
f block
s block
Element Family
Actinide
Alkali
CAS Number
7440111
99+
7439932
99+
Space Group Name
Not Available
Im_ 3m
Space Group Number
Not Available
229.00
1
Facts
Interesting Facts
- Mendelevium metal is synthetically produced metal.
- Mendelevium metal has been produced in only trace amount.
- Heat capacity of Lithium is very high.
- Lithium inflammable and highly explosive metal, hence it has to be stored properly.
Sources
Bombarding Einsteinium with Helium Ions
Found in Minerals, Mining
History
Who Discovered
Lawrence Berkeley National Laboratory
Johan August Arfwedson
Discovery
In 1955
In 1817
Abundance
Abundance In Universe
Not Available
6 * 10-7 %
18
Abundance In Sun
~-9999 %
~0.00017 %
11
Abundance In Meteorites
Not Available
0.00 %
22
Abundance In Earth's Crust
Not Available
0.00 %
99+
Abundance In Oceans
Not Available
0.00 %
15
Abundance In Humans
Not Available
0.00 %
16
Uses
Uses & Benefits
- Currently known uses of Mendelevium metal are limited to research purpose only.
- 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
NA
Aerospace Industry, Electrical Industry, Electronic Industry
Medical Uses
NA
NA
Other Uses
NA
Alloys
Biological Properties
Toxicity
Unknown
NA
Present in Human Body
No
Yes
In Blood
0.00 Blood/mg dm-3
37
0.00 Blood/mg dm-3
27
In Bone
0.00 p.p.m.
36
1.30 p.p.m.
17
Physical Properties
Melting Point
827.00 °C
99+
180.54 °C
99+
Boiling Point
Not Available
1,347.00 °C
99+
Appearance
Physical State
Solid
Solid
Color
Unknown
Silvery White
Luster
Metallic
NA
Hardness
Mohs Hardness
Not Available
0.60
21
Brinell Hardness
Not Available
5.00 MPa
99+
Speed of Sound
Not Available
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
Md
Li
Isotopes
Known Isotopes
16
23
8
30
Electronegativity
Pauling Electronegativity
1.30
32
0.98
99+
Sanderson Electronegativity
Not Available
0.89
26
Allred Rochow Electronegativity
1.20
27
0.97
38
Mulliken-Jaffe Electronegativity
Not Available
0.97
19
Allen Electronegativity
Not Available
0.91
99+
Electropositivity
Pauling Electropositivity
2.70
22
3.02
8
Ionization Energies
1st Energy Level
635.00 kJ/mol
99+
520.20 kJ/mol
99+
2nd Energy Level
1,235.00 kJ/mol
99+
7,298.10 kJ/mol
3
3rd Energy Level
2,470.00 kJ/mol
99+
11,815.00 kJ/mol
4
4th Energy Level
3,840.00 kJ/mol
99+
Not Available
Electrochemical Equivalent
3.21 g/amp-hr
12
0.26 g/amp-hr
99+
Electron Work Function
Not Available
2.90 eV
37
Other Chemical Properties
Ionization, Radioactive Isotopes, Radioactivity
Corrosion, Flammable, Ionization, Radioactive Isotopes
Atomic Properties
Atomic Number
101
17
3
99+
Electron Configuration
[Rn] 5f13 7s2
[He] 2s1
Crystal Structure
Not Known
Body Centered Cubic (BCC)
Crystal Lattice
Unknown-Crystal-Structure-of-Mendelevium.jpg#100
BCC-Crystal-Structure-.jpg#100
Atom
Number of Protons
101
17
3
99+
Number of Neutrons
157
7
4
99+
Number of Electrons
101
17
3
99+
Radius of an Atom
Atomic Radius
Not Available
152.00 pm
31
Covalent Radius
Not Available
128.00 pm
99+
Van der Waals Radius
246.00 pm
8
182.00 pm
35
Atomic Weight
258.00 amu
14
6.94 amu
99+
Atomic Volume
Not Available
13.10 cm3/mol
39
Adjacent Atomic Numbers
Valence Electron Potential
Not Available
19.00 (-eV)
99+
Lattice Constant
Not Available
351.00 pm
99+
Lattice Angles
NA
π/2, π/2, π/2
Lattice C/A Ratio
Not Available
Not Available
Mechanical Properties
Density
Density At Room Temperature
Not Available
0.53 g/cm3
99+
Density When Liquid (at m.p.)
Not Available
0.51 g/cm3
99+
Tensile Strength
Not Available
Not Available
Viscosity
Not Available
Not Available
Vapor Pressure
Vapor Pressure at 1000 K
Not Available
109.00 (Pa)
2
Elasticity properties
Shear Modulus
Not Available
4.20 GPa
99+
Bulk Modulus
Not Available
11.00 GPa
99+
Young's Modulus
Not Available
4.90 GPa
99+
Poisson Ratio
Not Available
Not Available
Other Mechanical Properties
Unknown
NA
Magnetic Properties
Magnetic Characteristics
Specific Gravity
Not Available
0.53
99+
Magnetic Ordering
Unknown
Paramagnetic
Electrical Properties
Electrical Property
Unknown
Conductor
Resistivity
Not Available
92.80 nΩ·m
33
Electrical Conductivity
Not Available
0.11 106/cm Ω
19
Electron Affinity
Not Available
59.60 kJ/mol
16
Thermal Properties
Specific Heat
Not Available
3.60 J/(kg K)
1
Molar Heat Capacity
Not Available
24.86 J/mol·K
99+
Thermal Conductivity
Not Available
84.80 W/m·K
20
Critical Temperature
Not Available
3,223.00 K
1
Thermal Expansion
Not Available
46.00 µm/(m·K)
7
Enthalpy
Enthalpy of Vaporization
Not Available
134.70 kJ/mol
99+
Enthalpy of Fusion
Not Available
3.00 kJ/mol
99+
Enthalpy of Atomization
Not Available
160.70 kJ/mol
99+
Standard Molar Entropy
Not Available
29.10 J/mol.K
99+
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