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Periodic Table Element Comparison: Compare Elements - Technetium vs Neptunium

Compare Technetium and Neptunium

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

Facts

Technetium
43
Tc
98
Solid
Silver
transition metal
7
manganese family 
5
d
[Kr] 4d5 5s2
2157 °C
4265 °C
2, 8, 18, 13, 2
CAS7440-26-8
Neighborhood Elements of Technetium
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 Technetium was discovered by Emilio Segrè in year 1937 in Italy. Technetium derived its name from from the Greek tekhnètos meaning 'artificial'
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

183 pm
8.5217391304348 cm3
156 pm
N/A
22
technetium Spectrum
273.5, 273.5, 438.8 pm
π/2, π/2, 2 π/3
P63/mmc
194

Simple Hexagonal

technetium 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
43
43
43
98
55
2, 8, 18, 13, 2
[Kr] 4d5 5s2
4d5 5s2
-3;-1  1;2;3;4;5;6;7
6S5/2
technetium 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

6
1.9
53 kJ/mol
702, 1470, 2850 kJ/mol
6
1.36
N/A
604.5 kJ/mol

Physical Properties

11.5 g/cm3
8.5217391304348

 

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


 

N/A
N/A
N/A

 

5×106 S/m
2×10-7 m Ω
7.8

 

51 W/(m K)
N/A

 

Paramagnetic
N/A
3.42×10-8
3.352×10-9
0.0003933

 

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

2157 °C
4265 °C
N/A
7.8

 

23 kJ/mol
550 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

CAS7440-26-8
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