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Periodic Table Element Comparison: Compare Elements - Silicon vs Protactinium

Compare Silicon and Protactinium

Compare Silicon and Protactinium 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 Protactinium with most reliable information about their properties, attributes, facts, uses etc. You can compare Si vs Pa 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
Protactinium
91
Pa
231.03588
Solid
Silver
actinide
N/A
 
7
f
[Rn] 5f2 6d1 7s2
1572 °C
4000 °C
2, 8, 18, 32, 20, 9, 2
CAS7440-13-3
Neighborhood Elements of Protactinium

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 Protactinium was discovered by William Crookes in year 1913 in Germany and United Kingdom. Protactinium derived its name derived its name from from the Greek protos, 'first', and actinium, which is produced through the radioactive decay of protactinium

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
N/A
N/A
9.9×10-13%
2×10-23%
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
180 pm
15.03161223162 cm3
N/A
N/A
500
protactinium Spectrum
392.5, 392.5, 323.8 pm
π/2, π/2, π/2
I4/mmm
139

Centered Tetragonal

protactinium 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
91
91
91
231.03588
140.03588
2, 8, 18, 32, 20, 9, 2
[Rn] 5f2 6d1 7s2
5f2 6d1 7s2
 3;4;5
4K11/2
protactinium 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
5
1.5
N/A
568 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
15.37 g/cm3
15.03161223162

 

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


 

N/A
N/A
N/A

 

5.6×106 S/m
1.8×10-7 m Ω
1.4

 

47 W/(m K)
N/A

 

Paramagnetic
N/A
3.25×10-8
7.509×10-9
0.0004995

 

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)
1572 °C
4000 °C
N/A
1.4

 

15 kJ/mol
470 kJ/mol
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
CAS7440-13-3
N/A
N/A
N/A
N/A
N/A
N/A
N/A
N/A

 

N/A
N/A