Periodic Table Element Comparison: Compare Elements - Roentgenium vs Cerium
Compare Roentgenium and Cerium
Compare Roentgenium and Cerium 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 Roentgenium vs Cerium with most reliable information about their properties, attributes, facts, uses etc. You can compare Rg vs Ce on more than 90 properties like electronegativity , oxidation state, atomic shells, orbital structure, Electronaffinity, physical states, electrical conductivity and many more.
Facts
Name |
Atomic Number |
Atomic Symbol |
Atomic Weight |
Phase |
Color |
Classification |
Group in Periodic Table |
Group Name |
Period in Periodic Table |
Block in Periodic Table |
Electronic Configuration |
Melting Point |
Boiling Point |
Electronic Shell Structure |
CAS Number |
Neighborhood Elements |
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 |
Cerium |
58 |
Ce |
140.116 |
Solid |
Silver |
lanthanide |
N/A |
6 |
f |
[Xe] 4f1 5d1 6s2 |
798 °C |
3360 °C |
2, 8, 18, 19, 9, 2 |
CAS7440-45-1 |
Neighborhood Elements of Cerium |
History
History |
The element Roentgenium was discovered by Gesellschaft für Schwerionenforschung in year 1994 in Germany. Roentgenium derived its name from from Wilhelm Conrad Röntgen, physicist |
The element Cerium was discovered by Martin Heinrich Klaproth in year 1803 in Germany and Sweden. Cerium derived its name derived its name from from the then recently discovered asteroid Ceres, considered a planet at the time |
Presence: Abundance in Nature and Around Us
N/A |
None |
None |
None |
None |
None |
1×10-6% |
4×10-7% |
7.5e-07 |
6e-05 |
1.2×10-10% |
N/A |
Crystal Structure and Atomic Structure
Atomic Radius |
Atomic Volume |
Covalent Radius |
Van der Waals Radius |
Neutron Cross Section |
Atomic Spectrum |
Lattice Constant |
Lattice Angle |
Space Group Name |
Space Group Number |
Crystal Structure |
N/A |
N/A cm3 |
N/A |
N/A |
N/A |
![]() |
N/A |
N/A |
N/A |
N/A |
Body Centered Cubic ![]() |
185 pm |
20.947226790253 cm3 |
N/A |
N/A |
0.6 |
![]() |
362, 362, 599 pm |
π/2, π/2, 2 π/3 |
P63/mmc |
194 |
Simple Hexagonal ![]() |
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 |
111 |
111 |
111 |
272 |
161 |
2, 8, 18, 32, 32, 17, 2 |
[Rn] 5f14 6d10 7s1 |
6d10 7s1 |
2S1/2 |
![]() |
58 |
58 |
58 |
140.116 |
82.116 |
2, 8, 18, 19, 9, 2 |
[Xe] 4f1 5d1 6s2 |
4f1 5d1 6s2 |
2;3;4 |
1G4 |
![]() |
Isotopes - Nuclear Properties
Isotopes |
Naturally occurring stable
isotopes: None. |
Naturally occurring stable
isotopes: 136Ce, 138Ce, 140Ce, 142Ce. |
Chemical Properties: Ionization Energies and electron affinity
N/A |
N/A |
N/A |
N/A |
4 |
1.12 |
50 kJ/mol |
534.4, 1050, 1949, 3547, 6325, 7490 kJ/mol |
Physical Properties
Density |
Molar Volume |
Elastic Properties |
Young Modulus |
Shear Modulus |
Bulk Modulus |
Poisson Ratio |
Hardness - Tests to Measure of Hardness of Element |
Mohs Hardness |
Vickers Hardness |
Brinell Hardness |
Electrical Properties |
Electrical Conductivity |
Resistivity |
Superconducting Point |
Heat and Conduction Properties |
Thermal Conductivity |
Thermal Expansion |
Magnetic Properties |
Magnetic Type |
Curie Point |
Mass Magnetic Susceptibility |
Molar Magnetic Susceptibility |
Volume Magnetic Susceptibility |
Optical Properties |
Refractive Index |
Acoustic Properties |
Speed of Sound |
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 |
N/A |
N/A |
6.689 g/cm3 |
20.947226790253 |
34 GPa |
14 GPa |
22 GPa |
0.24 |
2.5 MPa |
270 MPa |
412 MPa |
1.4×106 S/m |
7.4×10-7 m Ω |
0.022 |
11 W/(m K) |
6.3×10-6 K-1 |
Paramagnetic |
N/A |
2.2×10-7 |
3.0826×10-8 |
0.0014716 |
N/A |
2.1×103 m/s |
Thermal Properties - Enthalpies and thermodynamics
N/A |
N/A |
N/A |
N/A |
N/A |
N/A |
N/A |
798 °C |
3360 °C |
N/A |
0.022 |
5.5 kJ/mol |
350 kJ/mol |
N/A |
Regulatory and Health - Health and Safety Parameters and Guidelines
CAS Number |
RTECS Number |
DOT Hazard Class |
DOT Numbers |
EU Number |
NFPA Fire Rating |
NFPA Hazards |
NFPA Health Rating |
NFPA Reactivity Rating |
More |
AutoIgnition Point |
Flashpoint |
CAS54386-24-2 |
N/A |
N/A |
N/A |
N/A |
N/A |
N/A |
N/A |
N/A |
N/A |
N/A |
CAS7440-45-1 |
N/A |
4.1 |
1333 |
N/A |
3 |
N/A |
2 |
2 |
N/A |
N/A |