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Periodic Table Element Comparison: Compare Elements - Silicon vs Mendelevium

Compare Silicon and Mendelevium

Compare Silicon and Mendelevium on the basis of their properties, attributes and periodic table facts. Compare elements on more than 90 properties. All the elements of similar categories show a lot of similarities and differences in their chemical, atomic, physical properties and uses. These similarities and dissimilarities should be known while we study periodic table elements. You can study the detailed comparison between Silicon vs Mendelevium with most reliable information about their properties, attributes, facts, uses etc. You can compare Si vs Md on more than 90 properties like electronegativity , oxidation state, atomic shells, orbital structure, Electronaffinity, physical states, electrical conductivity and many more.

Facts

Silicon
14
Si
28.0855
Solid
Gray
metalloid
14
carbon family 
3
p
[Ne] 3s2 3p2
1414 °C
2.9×103 °C
2, 8, 4
CAS7440-21-3
Neighborhood Elements of Silicon
Mendelevium
101
Md
258
Solid
N/A
actinide
N/A
 
7
f
[Rn] 5f13 7s2
827 °C
N/A
2, 8, 18, 32, 31, 8, 2
CAS7440-11-1
Neighborhood Elements of Mendelevium

History

History
The element Silicon was discovered by Jöns Jacob Berzelius in year 1824 in Sweden. Silicon derived its name from from the Latin silex, 'flint' (originally silicium)
The element Mendelevium was discovered by Lawrence Berkeley National Laboratory in year 1955 in United States. Mendelevium derived its name derived its name from from Dmitri Mendeleev, chemist and inventor

Presence: Abundance in Nature and Around Us

Ppb by weight (1ppb =10^-7 %)
0.0007
0.0009
0.14
0.27
1e-06
0.00026
N/A
None
None
None
None
None

Crystal Structure and Atomic Structure

111 pm
12.053862660944 cm3
111 pm
210 pm
171
silicon Spectrum
543.09, 543.09, 543.09 pm
π/2, π/2, π/2
Fd_ 3m
227

Tetrahedral Packing

silicon Crystal Structure
N/A
N/A cm3
N/A
N/A
N/A
mendelevium Spectrum
N/A
N/A
N/A
N/A

Face Centered Cubic

mendelevium Crystal Structure

Atomic and Orbital Properties

Atomic Number
Number of Electrons (with no charge)
Number of Protons
Mass Number
Number of Neutrons
Shell structure (Electrons per energy level)
Electron Configuration
Valence Electrons
Oxidation State
Atomic Term Symbol (Quantum Numbers)
Shell structure
14
14
14
28.0855
14.0855
2, 8, 4
[Ne] 3s2 3p2
3s2 3p2
-4;-3;-2;-1  1;2;3;4
3P0
silicon Shells
101
101
101
258
157
2, 8, 18, 32, 31, 8, 2
[Rn] 5f13 7s2
5f13 7s2
 2;3
2F7/2
mendelevium Shells

Isotopes - Nuclear Properties

Isotopes
Naturally occurring stable isotopes:
28Si, 29Si, 30Si.
Naturally occurring stable isotopes:
None.

Chemical Properties: Ionization Energies and electron affinity

4
1.9
133.6 kJ/mol
786.5, 1577.1, 3231.6, 4355.5, 16091, 19805, 23780, 29287, 33878, 38726 kJ/mol
3
1.3
N/A
635 kJ/mol

Physical Properties

2.33 g/cm3
12.053862660944

 

47 GPa
N/A
100 GPa
N/A


 

6.5 MPa
N/A
N/A

 

1×103 S/m
0.001 m Ω
N/A

 

150 W/(m K)
2.6×10-6 K-1

 

Diamagnetic
N/A
-1.6×10-9
-4.49×10-11
-3.73×10-6

 

N/A

 

2.2×103 m/s
N/A
N/A

 

N/A
N/A
N/A
N/A


 

N/A
N/A
N/A

 

N/A
N/A
N/A

 

N/A
N/A

 

N/A
N/A
N/A
N/A
N/A

 

N/A

 

N/A

Thermal Properties - Enthalpies and thermodynamics

1414 °C
2.9×103 °C
N/A
N/A

 

50.2 kJ/mol
359 kJ/mol
-9055 J/(kg K)
827 °C
N/A
N/A
N/A

 

N/A
N/A
N/A

Regulatory and Health - Health and Safety Parameters and Guidelines

CAS7440-21-3
RTECSVW0400000
4.1
1346
N/A
0
N/A
1
0

 

150 °C
N/A
CAS7440-11-1
N/A
N/A
N/A
N/A
N/A
N/A
N/A
N/A

 

N/A
N/A