Compare Curium vs Nobelium: Periodic Table Element Comparison Table and Properties
Compare the elements Curium and Nobelium on the basis of their properties, attributes and periodic table facts. Compare elements - Curium and Nobelium comparison table side by side across over 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 Curium vs Nobelium with most reliable information about their properties, attributes, facts, uses etc. You can compare Cm vs No on more than 90 properties like electronegativity, oxidation state, atomic shells, orbital structure, Electronaffinity, physical states, electrical conductivity and many more. This in-depth comparison helps students, educators, researchers, and science enthusiasts understand the differences and similarities between Curium and Nobelium.
Curium and Nobelium Comparison
Here's a detailed comparison between Curium (Cm) and Nobelium (No), focusing on their position in the periodic table, physical and chemical properties, stability, and uses.
Facts - Basic Element Details
| Name | Curium | Nobelium |
|---|---|---|
| Atomic Number | 96 | 102 |
| Atomic Symbol | Cm | No |
| Atomic Weight | 247 | 259 |
| Phase at STP | Solid | Solid |
| Color | Silver | - |
| Metallic Classification | Actinide | Actinide |
| Group in Periodic Table | Actinide (no group number) | Actinide (no group number) |
| Group Name | ||
| Period in Periodic Table | period 7 | period 7 |
| Block in Periodic Table | f -block | f -block |
| Electronic Configuration | [Rn] 5f7 6d1 7s2 | [Rn] 5f14 7s2 |
| Electronic Shell Structure (Electrons per shell) | 2, 8, 18, 32, 25, 9, 2 | 2, 8, 18, 32, 32, 8, 2 |
| Melting Point | 1618 K | 1100 K |
| Boiling Point | 3383 K | - |
| CAS Number | CAS7440-51-9 | CAS10028-14-5 |
| Neighborhood Elements | Neighborhood Elements of Curium | Neighborhood Elements of Nobelium |
History
| Parameter | Curium | Nobelium |
|---|---|---|
| History | The element Curium was discovered by G. T. Seaborg, R. A. James and A. Ghiorso in year 1944 in United States. Curium derived its name from Pierre Curie, a physicist, and Marie Curie, a physicist and chemist, named after great scientists by analogy with gadolinium. | The element Nobelium was discovered by E. D. Donets, V. A. Shchegolev and V. A. Ermakov in year 1966 in Sweden and United States. Nobelium derived its name from Alfred Nobel, chemist, engineer, innovator, and armaments manufacturer. |
| Discovery | G. T. Seaborg, R. A. James and A. Ghiorso (1944) | E. D. Donets, V. A. Shchegolev and V. A. Ermakov (1966) |
| Isolated | () | () |
Presence: Abundance in Nature and Around Us
Parts per billion (ppb) by weight / by atoms (1ppb =10^-7 %)
| Property | Curium | Nobelium |
|---|---|---|
| Abundance in Universe | - / - | - / - |
| Abundance in Sun | - / - | - / - |
| Abundance in Meteorites | - / - | - / - |
| Abundance in Earth's Crust | - / - | - / - |
| Abundance in Oceans | - / - | - / - |
| Abundance in Humans | - / - | - / - |
Crystal Structure and Atomic Structure
| Property | Curium | Nobelium |
|---|---|---|
| Atomic Volume | 18.05 cm3/mol | - |
| Atomic Radius | - | - |
| Covalent Radius | - | - |
| Van der Waals Radius | - | - |
Atomic Spectrum - Spectral Lines | ||
| Emission Spectrum |  | Not available |
| Absorption Spectrum |  | Not available |
| Lattice Constant | 349.6, 349.6, 1133.1 pm | - |
| Lattice Angle | π/2, π/2, 2 π/3 | - |
| Space Group Name | P63/mmc | - |
| Space Group Number | 194 | - |
| Crystal Structure | Simple Hexagonal  | Face Centered Cubic  |
Atomic and Orbital Properties
| Property | Curium | Nobelium |
|---|---|---|
| Atomic Number | 96 | 102 |
| Number of Electrons (with no charge) | 96 | 102 |
| Number of Protons | 96 | 102 |
| Mass Number | 247 | 259 |
| Number of Neutrons | 151 | 157 |
| Shell structure (Electrons per energy level) | 2, 8, 18, 32, 25, 9, 2 | 2, 8, 18, 32, 32, 8, 2 |
| Electron Configuration | [Rn] 5f7 6d1 7s2 | [Rn] 5f14 7s2 |
| Valence Electrons | 5f7 6d1 7s2 | 5f14 7s2 |
| Oxidation State | 3 | 2 |
| Atomic Term Symbol (Quantum Numbers) | 9D2 | 1S0 |
| Shell structure |  |  |
Isotopes and Nuclear Properties
Curium has 0 stable naturally occuring isotopes while Nobelium has 0 stable naturally occuring isotopes.
| Parameter | Curium | Nobelium |
|---|---|---|
| Known Isotopes | 233Cm, 234Cm, 235Cm, 236Cm, 237Cm, 238Cm, 239Cm, 240Cm, 241Cm, 242Cm, 243Cm, 244Cm, 245Cm, 246Cm, 247Cm, 248Cm, 249Cm, 250Cm, 251Cm, 252Cm | 248No, 249No, 250No, 251No, 252No, 253No, 254No, 255No, 256No, 257No, 258No, 259No, 260No, 261No, 262No, 263No, 264No |
| Stable Isotopes | - | |
| Neutron Cross Section | 60 | - |
| Neutron Mass Absorption | - | - |
Chemical Properties: Ionization Energies and electron affinity
| Property | Curium | Nobelium |
|---|---|---|
| Valence or Valency | 4 | 3 |
| Electronegativity | 1.28 Pauling Scale | 1.3 Pauling Scale |
| Oxidation State | 3 | 2 |
| Electron Affinity | - | - |
| Ionization Energies | 1st: 581 kJ/mol | 1st: 642 kJ/mol |
Physical Properties
| Property | Curium | Nobelium |
|---|---|---|
| Phase at STP | Solid | Solid |
| Color | Silver | - |
| Density | 13.51 g/cm3 | - |
| Density (when liquid (at melting point)) | - | - |
| Molar Volume | 18.05 cm3/mol | - |
Mechanical and Hardness Properties
| Property | Curium | Nobelium |
|---|---|---|
Elastic Properties | ||
| Young Modulus | - | - |
| Shear Modulus | - | - |
| Bulk Modulus | - | - |
| Poisson Ratio | - | - |
Hardness - Tests to Measure of Hardness of Element | ||
| Mohs Hardness | - | - |
| Vickers Hardness | - | - |
| Brinell Hardness | - | - |
Thermal and Electrical Conductivity
| Property | Curium | Nobelium |
|---|---|---|
Heat and Conduction Properties | ||
| Thermal Conductivity | - | - |
| Thermal Expansion | - | - |
Electrical Properties | ||
| Electrical Conductivity | - | - |
| Resistivity | - | - |
| Superconducting Point | - | - |
Magnetic and Optical Properties
| Property | Curium | Nobelium |
|---|---|---|
Magnetic Properties | ||
| Magnetic Type | - | - |
| Curie Point | - | - |
| Mass Magnetic Susceptibility | - | - |
| Molar Magnetic Susceptibility | - | - |
| Volume Magnetic Susceptibility | - | - |
Optical Properties | ||
| Refractive Index | - | - |
Acoustic Properties | ||
| Speed of Sound | - | - |
Thermal Properties - Enthalpies and thermodynamics
| Property | Curium | Nobelium |
|---|---|---|
| Melting Point | 1618 K | 1100 K |
| Boiling Point | 3383 K | - |
| Critical Temperature | - | - |
| Superconducting Point | - | - |
Enthalpies | ||
| Heat of Fusion | - | - |
| Heat of Vaporization | - | - |
| Heat of Combustion | - | - |
Regulatory and Health - Health and Safety Parameters and Guidelines
| Parameter | Curium | Nobelium |
|---|---|---|
| CAS Number | CAS7440-51-9 | CAS10028-14-5 |
| RTECS Number | - | - |
| DOT Hazard Class | - | - |
| DOT Numbers | - | - |
| EU Number | - | - |
| NFPA Fire Rating | - | - |
| NFPA Health Rating | - | - |
| NFPA Reactivity Rating | - | - |
| NFPA Hazards | - | - |
| AutoIgnition Point | - | - |
| Flashpoint | - | - |
Compare Curium and Nobelium With Other Elements
Compare Curium and Nobelium with other elements of the periodic table. Explore howCurium and Nobelium stack up against other elements of the periodic table. Use our interactive comparison tool to analyze 90+ properties across different metals, non-metals, metalloids, and noble gases. Understanding these differences is crucial for applications in engineering, chemistry, electronics, biology, and material science.