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Periodic Table Element Comparison: Compare Elements - Californium vs Neptunium

Compare Californium and Neptunium

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

Facts

Californium
98
Cf
251
Solid
N/A
actinide
N/A
 
7
f
[Rn] 5f10 7s2
900 °C
N/A
2, 8, 18, 32, 28, 8, 2
CAS7440-71-3
Neighborhood Elements of Californium
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 Californium was discovered by Lawrence Berkeley National Laboratory in year 1950 in United States. Californium derived its name from from California, where the element was first synthesized
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
None
None
None
None
N/A
None
None
None
None
None

Crystal Structure and Atomic Structure

N/A
16.622516556291 cm3
N/A
N/A
2.9×103
californium Spectrum
338, 338, 1102.5 pm
π/2, π/2, 2 π/3
P63/mmc
194

Simple Hexagonal

californium 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
98
98
98
251
153
2, 8, 18, 32, 28, 8, 2
[Rn] 5f10 7s2
5f10 7s2
 2;3;4
5I8
californium 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

4
1.3
N/A
608 kJ/mol
6
1.36
N/A
604.5 kJ/mol

Physical Properties

15.1 g/cm3
16.622516556291

 

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
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

900 °C
N/A
N/A
N/A

 

N/A
N/A
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

CAS7440-71-3
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