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Periodic Table Element Comparison: Compare Elements - Fermium vs Roentgenium

Compare Fermium and Roentgenium

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

Facts

Fermium
100
Fm
257
Solid
N/A
actinide
N/A
 
7
f
[Rn] 5f12 7s2
1527 °C
N/A
2, 8, 18, 32, 30, 8, 2
CAS7440-72-4
Neighborhood Elements of Fermium
Roentgenium
111
Rg
272
Solid
N/A
transition_metal
11
copper family 
7
d
[Rn] 5f14 6d10 7s1
N/A
N/A
2, 8, 18, 32, 32, 17, 2
CAS54386-24-2
Neighborhood Elements of Roentgenium

History

History
The element Fermium was discovered by Lawrence Berkeley National Laboratory in year 1952 in United States. Fermium derived its name from from Enrico Fermi, physicist
The element Roentgenium was discovered by Gesellschaft für Schwerionenforschung in year 1994 in Germany. Roentgenium derived its name derived its name from from Wilhelm Conrad Röntgen, physicist

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
N/A cm3
N/A
N/A
5.8×103
fermium Spectrum
N/A
N/A
N/A
N/A

Body Centered Cubic

fermium Crystal Structure
N/A
N/A cm3
N/A
N/A
N/A
roentgenium Spectrum
N/A
N/A
N/A
N/A

Body Centered Cubic

roentgenium 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
100
100
100
257
157
2, 8, 18, 32, 30, 8, 2
[Rn] 5f12 7s2
5f12 7s2
 2;3
3H6
fermium Shells
111
111
111
272
161
2, 8, 18, 32, 32, 17, 2
[Rn] 5f14 6d10 7s1
6d10 7s1
 
2S1/2
roentgenium Shells

Isotopes - Nuclear Properties

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

Chemical Properties: Ionization Energies and electron affinity

Physical Properties

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N/A

 

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N/A


 

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N/A

 

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N/A
N/A
N/A


 

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N/A

 

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N/A
N/A

 

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N/A

 

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

 

N/A

 

N/A

Thermal Properties - Enthalpies and thermodynamics

1527 °C
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

Regulatory and Health - Health and Safety Parameters and Guidelines

CAS7440-72-4
N/A
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N/A
N/A
N/A
N/A
N/A

 

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CAS54386-24-2
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