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Periodic Table Element Comparison: Compare Elements - Protactinium vs Americium

Compare Protactinium and Americium

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

Facts

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
Americium
95
Am
243
Solid
Silver
actinide
N/A
 
7
f
[Rn] 5f7 7s2
1176 °C
2011 °C
2, 8, 18, 32, 25, 8, 2
CAS7440-35-9
Neighborhood Elements of Americium

History

History
The element Protactinium was discovered by William Crookes in year 1913 in Germany and United Kingdom. Protactinium derived its name from from the Greek protos, 'first', and actinium, which is produced through the radioactive decay of protactinium
The element Americium was discovered by Glenn T. Seaborg in year 1944 in United States. Americium derived its name derived its name from from The Americas, as the element was first synthesized on the continent, by analogy with europium

Presence: Abundance in Nature and Around Us

Ppb by weight (1ppb =10^-7 %)
N/A
N/A
N/A
9.9×10-13%
2×10-23%
None
N/A
None
None
None
None
None

Crystal Structure and Atomic 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
175 pm
17.77615215801 cm3
N/A
N/A
74
americium Spectrum
346.81, 346.81, 1124.1 pm
π/2, π/2, 2 π/3
P63/mmc
194

Simple Hexagonal

americium 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
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
95
95
95
243
148
2, 8, 18, 32, 25, 8, 2
[Rn] 5f7 7s2
5f7 7s2
 2;3;4;5;6;7
8S7/2
americium Shells

Isotopes - Nuclear Properties

Isotopes
Naturally occurring stable isotopes:
None.
Naturally occurring stable isotopes:
None.

Chemical Properties: Ionization Energies and electron affinity

5
1.5
N/A
568 kJ/mol
4
1.3
N/A
578 kJ/mol

Physical Properties

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
13.67 g/cm3
17.77615215801

 

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


 

N/A
N/A
N/A

 

N/A
N/A
0.6

 

10 W/(m K)
N/A

 

Paramagnetic
N/A
5.15×10-8
1.251×10-8
0.000704

 

N/A

 

N/A

Thermal Properties - Enthalpies and thermodynamics

1572 °C
4000 °C
N/A
1.4

 

15 kJ/mol
470 kJ/mol
N/A
1176 °C
2011 °C
N/A
0.6

 

N/A
N/A
N/A

Regulatory and Health - Health and Safety Parameters and Guidelines

CAS7440-13-3
N/A
N/A
N/A
N/A
N/A
N/A
N/A
N/A

 

N/A
N/A
CAS7440-35-9
N/A
N/A
N/A
N/A
N/A
N/A
N/A
N/A

 

N/A
N/A