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Periodic Table Element Comparison: Compare Elements - Actinium vs Neptunium

Compare Actinium and Neptunium

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

Facts

Actinium
89
Ac
227
Solid
Silver
actinide
N/A
 
7
f
[Rn] 6d1 7s2
1050 °C
3200 °C
2, 8, 18, 32, 18, 9, 2
CAS7440-34-8
Neighborhood Elements of Actinium
Neptunium
93
Np
237
Solid
Silver
actinide
N/A
 
7
f
[Rn] 5f4 6d1 7s2
644 °C
4×103 °C
2, 8, 18, 32, 22, 9, 2
CAS7439-99-8
Neighborhood Elements of Neptunium

History

History
The element Actinium was discovered by Friedrich Oskar Giesel in year 1899 in France. Actinium derived its name from from the Greek aktis, 'ray'
The element Neptunium was discovered by Edwin McMillan in year 1940 in United States. Neptunium derived its name derived its name from from Neptune, the eighth planet in the Solar System

Presence: Abundance in Nature and Around Us

Ppb by weight (1ppb =10^-7 %)
N/A
None
N/A
N/A
N/A
None
N/A
None
None
None
None
None

Crystal Structure and Atomic Structure

195 pm
22.542204568024 cm3
N/A
N/A
810
actinium Spectrum
567, 567, 567 pm
π/2, π/2, π/2
Fm_ 3m
225

Face Centered Cubic

actinium Crystal Structure
175 pm
11.58924205379 cm3
N/A
N/A
180
neptunium Spectrum
666.3, 472.3, 488.7 pm
π/2, π/2, π/2
Pnma
62

Simple Orthorhombic

neptunium 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
89
89
89
227
138
2, 8, 18, 32, 18, 9, 2
[Rn] 6d1 7s2
6d1 7s2
 3
2D3/2
actinium Shells
93
93
93
237
144
2, 8, 18, 32, 22, 9, 2
[Rn] 5f4 6d1 7s2
5f4 6d1 7s2
 2;3;4;5;6;7
6L11/2
neptunium Shells

Isotopes - Nuclear Properties

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

Chemical Properties: Ionization Energies and electron affinity

3
1.1
N/A
499, 1170 kJ/mol
6
1.36
N/A
604.5 kJ/mol

Physical Properties

10.07 g/cm3
22.542204568024

 

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


 

N/A
N/A
N/A

 

N/A
N/A
N/A

 

12 W/(m K)
N/A

 

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

 

N/A

 

N/A
20.45 g/cm3
11.58924205379

 

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


 

N/A
N/A
N/A

 

8.3×105 S/m
1.2×10-6 m Ω
N/A

 

6 W/(m K)
N/A

 

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

 

N/A

 

N/A

Thermal Properties - Enthalpies and thermodynamics

1050 °C
3200 °C
N/A
N/A

 

14 kJ/mol
400 kJ/mol
N/A
644 °C
4×103 °C
N/A
N/A

 

10 kJ/mol
335 kJ/mol
N/A

Regulatory and Health - Health and Safety Parameters and Guidelines

CAS7440-34-8
N/A
N/A
N/A
N/A
N/A
N/A
N/A
N/A

 

N/A
N/A
CAS7439-99-8
N/A
N/A
N/A
N/A
N/A
N/A
N/A
N/A

 

N/A
N/A