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Periodic Table Element Comparison: Compare Elements - Promethium vs Protactinium

Compare Promethium and Protactinium

Compare Promethium 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 Promethium vs Protactinium with most reliable information about their properties, attributes, facts, uses etc. You can compare Pm vs Pa on more than 90 properties like electronegativity , oxidation state, atomic shells, orbital structure, Electronaffinity, physical states, electrical conductivity and many more.

Facts

Promethium
61
Pm
145
Solid
Silver
lanthanide
N/A
 
6
f
[Xe] 4f5 6s2
1.1×103 °C
3×103 °C
2, 8, 18, 23, 8, 2
CAS7440-12-2
Neighborhood Elements of Promethium
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 Promethium was discovered by Chien Shiung Wu in year 1945 in United States. Promethium derived its name from from Prometheus of Greek mythology who stole fire from the Gods and gave it to humans
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 %)
N/A
None
None
None
None
None
N/A
N/A
N/A
9.9×10-13%
2×10-23%
None

Crystal Structure and Atomic Structure

205 pm
19.961453744493 cm3
N/A
N/A
8×103
promethium Spectrum
N/A
N/A
N/A
N/A

Simple Hexagonal

promethium 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
61
61
61
145
84
2, 8, 18, 23, 8, 2
[Xe] 4f5 6s2
4f5 6s2
 2;3
6H5/2
promethium 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:
None.
Naturally occurring stable isotopes:
None.

Chemical Properties: Ionization Energies and electron affinity

3
N/A
50 kJ/mol
540, 1050, 2150, 3970 kJ/mol
5
1.5
N/A
568 kJ/mol

Physical Properties

7.264 g/cm3
19.961453744493

 

46 GPa
18 GPa
33 GPa
0.28


 

N/A
N/A
N/A

 

1.3×106 S/m
7.5×10-7 m Ω
N/A

 

15 W/(m K)
0.000011 K-1

 

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

 

N/A

 

N/A
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

1.1×103 °C
3×103 °C
N/A
N/A

 

7.7 kJ/mol
290 kJ/mol
N/A
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

CAS7440-12-2
N/A
N/A
N/A
N/A
N/A
N/A
N/A
N/A

 

N/A
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