No Nobelium
Element Information, Facts, Properties, Trends, Uses, Comparison with other elements

Nobelium is a synthetic chemical element with symbol No and atomic number 102. It is named in honor of Alfred Nobel, the inventor of dynamite and benefactor of science. A radioactive metal, it is the tenth transuranic element and is the penultimate member of the Actinide series.
It belongs to group of the periodic table having trivial name .
Nobelium Facts
Read key information and facts about element Nobelium
Name | Nobelium |
Atomic Number | 102 |
Atomic Symbol | No |
Atomic Weight | 259 |
Phase | Solid |
Color | - |
Appearance | - |
Classification | Actinide |
Group in Periodic Table | - |
Group Name | |
Period in Periodic Table | period 7 |
Block in Periodic Table | f -block |
Electronic Configuration | [Rn] 5f14 7s2 |
Electronic Shell Structure (Electrons per shell) | 2, 8, 18, 32, 32, 8, 2 |
Melting Point | 1100 K |
Boiling Point | - |
CAS Number | CAS10028-14-5 |
How to Locate Nobelium on Periodic Table
Periodic table is arranged by atomic number, number of protons in the nucleus which is same as number of electrons. The atomic number increases from left to right. Periodic table starts at top left ( Atomic number 1) and ends at bottom right (atomic number 118). Therefore you can directly look for atomic number 102 to find Nobelium on periodic table.
Another way to read periodic table and locate an element is by using group number (column) and period number (row). To locate Nobelium on periodic table look for cross section of group - and period 7 in the modern periodic table.
Nobelium History
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 was first isolated by in . Nobelium derived its name from Alfred Nobel, chemist, engineer, innovator, and armaments manufacturer.
First prepared by bombardment of uranium with neon atoms.
Nobelium Presence: Abundance in Nature and Around Us
The table below shows the abundance of Nobelium in Universe, Sun, Meteorites, Earth's Crust, Oceans and Human Body.
ppb by weight (1ppb =10^-7 %) | ppb by atoms (1ppb =10^-7 %) | |
---|---|---|
Abundance in Universe | - | - |
Abundance in Sun | - | - |
Abundance in Meteorites | - | - |
Abundance in Earth's Crust | - | - |
Abundance in Oceans | - | - |
Abundance in Humans | - | - |
Crystal Structure of Nobelium
The solid state structure of Nobelium is Face Centered Cubic.
The Crystal structure can be described in terms of its unit Cell. The unit Cells repeats itself in three dimensional space to form the structure.
Unit Cell Parameters
The unit cell is represented in terms of its lattice parameters, which are the lengths of the cell edges Lattice Constants (a, b and c)
a | b | c |
---|---|---|
and the angles between them Lattice Angles (alpha, beta and gamma).
alpha | beta | gamma |
---|---|---|
The positions of the atoms inside the unit cell are described by the set of atomic positions ( xi, yi, zi) measured from a reference lattice point.
The symmetry properties of the crystal are described by the concept of space groups. All possible symmetric arrangements of particles in three-dimensional space are described by the 230 space groups (219 distinct types, or 230 if chiral copies are considered distinct.
Space Group Name | - |
Space Group Number | - |
Crystal Structure | Face Centered Cubic |
Number of atoms per unit cell | 4 |

The number of atoms per unit cell in a simple cubic, face-centered cubic and body-centred cubic are 1,4,2 respectively.
Nobelium Atomic and Orbital Properties
Nobelium atoms have 102 electrons and the electronic shell structure is [2, 8, 18, 32, 32, 8, 2] with Atomic Term Symbol (Quantum Numbers) 1S0.
Atomic Number | 102 |
Number of Electrons (with no charge) | 102 |
Number of Protons | 102 |
Mass Number | 259 |
Number of Neutrons | 157 |
Shell structure (Electrons per energy level) | 2, 8, 18, 32, 32, 8, 2 |
Electron Configuration | [Rn] 5f14 7s2 |
Valence Electrons | 5f14 7s2 |
Valence (Valency) | 3 |
Main Oxidation States | 2 |
Oxidation States | 2, 3 |
Atomic Term Symbol (Quantum Numbers) | 1S0 |
Bohr Atomic Model of Nobelium - Electrons per energy level

n | s | p | d | f |
---|
Ground State Electronic Configuration of Nobelium - neutral Nobelium atom
Abbreviated electronic configuration of Nobelium
The ground state abbreviated electronic configuration of Neutral Nobelium atom is [Rn] 5f14 7s2. The portion of Nobelium configuration that is equivalent to the noble gas of the preceding period, is abbreviated as [Rn]. For atoms with many electrons, this notation can become lengthy and so an abbreviated notation is used. This is important as it is the Valence electrons 5f14 7s2, electrons in the outermost shell that determine the chemical properties of the element.
Unabbreviated electronic configuration of neutral Nobelium
Complete ground state electronic configuration for the Nobelium atom, Unabbreviated electronic configuration
1s2 2s2 2p6 3s2 3p6 3d10 4s2 4p6 4d10 5s2 5p6 4f14 5d10 6s2 6p6 5f14 7s2
Electrons are filled in atomic orbitals as per the order determined by the Aufbau principle, Pauli Exclusion Principle and Hund’s Rule.

Atomic Structure of Nobelium
Nobelium atomic radius is - , while it's covalent radius is - .
Atomic Radius Calculated | - (0 Å) |
Atomic Radius Empirical | - (0 Å) |
Atomic Volume | - |
Covalent Radius | - |
Van der Waals Radius | - |
Neutron Cross Section | - |
Neutron Mass Absorption | - |
Atomic Spectrum of Nobelium
Nobelium Chemical Properties: Nobelium Ionization Energies and electron affinity
The electron affinity of Nobelium is - .
Valence | 3 |
Electronegativity | 1.3 |
ElectronAffinity | - |
Ionization Energy of Nobelium
Refer to table below for Ionization energies of Nobelium
Ionization energy number | Enthalpy - kJ/mol |
---|---|
1st | 642 |
Nobelium Physical Properties
Refer to below table for Nobelium Physical Properties
Density | - |
Molar Volume | - |
Elastic Properties
Young Modulus | - |
Shear Modulus | - |
Bulk Modulus | - |
Poisson Ratio | - |
Hardness of Nobelium - Tests to Measure of Hardness of Element
Mohs Hardness | - |
Vickers Hardness | - |
Brinell Hardness | - |
Nobelium Electrical Properties
Nobelium is Conductor of electricity. Refer to table below for the Electrical properties ofNobelium
Electrical Conductivity | - |
Resistivity | - |
Superconducting Point | - |
Nobelium Heat and Conduction Properties
Thermal Conductivity | - |
Thermal Expansion | - |
Nobelium Magnetic Properties
Magnetic Type | - |
Curie Point | - |
Mass Magnetic Susceptibility | - |
Molar Magnetic Susceptibility | - |
Volume Magnetic Susceptibility | - |
Optical Properties of Nobelium
Refractive Index | - |
Acoustic Properties of Nobelium
Speed of Sound | - |
Nobelium Thermal Properties - Enthalpies and thermodynamics
Refer to table below for Thermal properties of Nobelium
Melting Point | 1100 K (826.85°C, 1520.3300000000002 °F) |
Boiling Point | - (-273.15°C, -459.66999999999996 °F) |
Critical Temperature | - |
Superconducting Point | - |
Enthalpies of Nobelium
Heat of Fusion | - |
Heat of Vaporization | - |
Heat of Combustion | - |
Nobelium Isotopes - Nuclear Properties of Nobelium
Nobelium has 17 isotopes, with between 248 and 264 nucleons. Nobelium has 0 stable naturally occuring isotopes.
Isotopes of Nobelium - Naturally occurring stable Isotopes: -.
Isotope | Z | N | Isotope Mass | % Abundance | T half | Decay Mode |
---|---|---|---|---|---|---|
248No | 102 | 146 | 248 | Synthetic | ||
249No | 102 | 147 | 249 | Synthetic | ||
250No | 102 | 148 | 250 | Synthetic | ||
251No | 102 | 149 | 251 | Synthetic | ||
252No | 102 | 150 | 252 | Synthetic | ||
253No | 102 | 151 | 253 | Synthetic | ||
254No | 102 | 152 | 254 | Synthetic | ||
255No | 102 | 153 | 255 | Synthetic | ||
256No | 102 | 154 | 256 | Synthetic | ||
257No | 102 | 155 | 257 | Synthetic | ||
258No | 102 | 156 | 258 | Synthetic | ||
259No | 102 | 157 | 259 | Synthetic | 2.78 h | AlphaEmission |
260No | 102 | 158 | 260 | Synthetic | ||
261No | 102 | 159 | 261 | Synthetic | ||
262No | 102 | 160 | 262 | Synthetic | ||
263No | 102 | 161 | 263 | Synthetic | ||
264No | 102 | 162 | 264 | Synthetic |
Regulatory and Health - Health and Safety Parameters and Guidelines
Database Search
List of unique identifiers to search the element in various chemical registry databases
Database | Identifier number |
---|---|
CAS Number - Chemical Abstracts Service (CAS) | CAS10028-14-5 |
RTECS Number | - |
CID Number | - |
Gmelin Number | - |
NSC Number | - |
Compare Nobelium with other elements
Compare Nobelium with all Group elements
Compare Nobelium with all Period 7 elements
Compare Nobelium with all Actinide elements
FAQs
What is the electronic configuration of Nobelium?
The electronic configuration of Nobelium is 1s2 2s2 2p6 3s2 3p6 3d10 4s2 4p6 4d10 5s2 5p6 4f14 5d10 6s2 6p6 5f14 7s2.
What is the abbreviated electronic configuration of Nobelium?
The abbreviated electronic configuration of Nobelium is [Rn] 5f14 7s2. To form abbreviated notation of electronic configuration, the completely filled subshells are replaced by the noble gas of the preceding period in square brackets.
What is the symbol of Nobelium?
Symbol of Nobelium is No. Nobelium is a chemical element with symbol No and atomic number 102.
What is the position of Nobelium in the Periodic Table?
Nobelium is a chemical element with the symbol No and atomic number 102. Nobelium is the 102 element on the periodic table. It is located in group null and period 7 in the modern periodic table.
What is the atomic number of Nobelium?
The atomic number of Nobelium is 102.
What is the color of Nobelium?
Nobelium is of color.
Who discovered Nobelium?
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 was first isolated by undefined in undefined.
How many valence electrons does a Nobelium atom have?
Nobelium has 3 valence electrons. Nobelium has 102 electrons out of which 3 valence electrons are present in the 5f14 7s2 outer orbitals of atom.
What is the melting Point of Nobelium?
Melting Point of Nobelium is 1100 K.
What is the boiling Point of Nobelium?
Boiling Point of Nobelium is null K.
What is the melting Point of Nobelium in Kelvin?
Melting Point of Nobelium in Kelvin is 1100 K.
What is the boiling Point of Nobelium in Kelvin?
Boiling Point of Nobelium in Kelvin is null K.
What is the electronic configuration of Nobelium 102?
The electronic configuration of Nobelium will be 1s2 2s2 2p6 3s2 3p6 3d10 4s2 4p6 4d10 5s2 5p6 4f14 5d10 6s2 6p6 5f14 7s2.
How do you write the electron configuration for Nobelium?
The electronic configuration of Nobelium will be 1s2 2s2 2p6 3s2 3p6 3d10 4s2 4p6 4d10 5s2 5p6 4f14 5d10 6s2 6p6 5f14 7s2.