Rutherfordium is a chemical element with symbol Rf and atomic number 104, named in honor of physicist Ernest Rutherford. It is a synthetic element (an element that can be created in a laboratory but is not found in nature) and radioactive; the most stable known isotope, 267Rf, has a half-life of approximately 1.3 hours. In the periodic table of the elements, it is a d - block element and the second of the fourth - row transition elements.
It belongs to group 4 of the periodic table having trivial name .
Rutherfordium Facts
Read key information and facts about element Rutherfordium
Name | Rutherfordium |
Atomic Number | 104 |
Atomic Symbol | Rf |
Atomic Weight | 261 |
Phase | Solid |
Color | - |
Appearance | - |
Classification | Transition Metal |
Group in Periodic Table | 4 |
Group Name | titanium family |
Period in Periodic Table | period 7 |
Block in Periodic Table | d -block |
Electronic Configuration | [Rn] 5f14 6d2 7s2 |
Electronic Shell Structure (Electrons per shell) | 2, 8, 18, 32, 32, 10, 2 |
Melting Point | - |
Boiling Point | - |
CAS Number | CAS53850-36-5 |
How to Locate Rutherfordium 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 104 to find Rutherfordium 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 Rutherfordium on periodic table look for cross section of group 4 and period 7 in the modern periodic table.
Rutherfordium History
The element Rutherfordium was discovered by A. Ghiorso,M. Nurmia,J. Harris,K. Eskola and P. Eskola in year 1969 in Russia and United States. Rutherfordium was first isolated by in . Rutherfordium derived its name from Ernest Rutherford, chemist and physicist.
Prepared by bombardment of californium with carbon atoms.
Rutherfordium Presence: Abundance in Nature and Around Us
The table below shows the abundance of Rutherfordium 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 Rutherfordium
The solid state structure of Rutherfordium is Simple Hexagonal.
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 | Simple Hexagonal |
Number of atoms per unit cell |

The number of atoms per unit cell in a simple cubic, face-centered cubic and body-centred cubic are 1,4,2 respectively.
Rutherfordium Atomic and Orbital Properties
Rutherfordium atoms have 104 electrons and the electronic shell structure is [2, 8, 18, 32, 32, 10, 2] with Atomic Term Symbol (Quantum Numbers) 3F2.
Atomic Number | 104 |
Number of Electrons (with no charge) | 104 |
Number of Protons | 104 |
Mass Number | 261 |
Number of Neutrons | 157 |
Shell structure (Electrons per energy level) | 2, 8, 18, 32, 32, 10, 2 |
Electron Configuration | [Rn] 5f14 6d2 7s2 |
Valence Electrons | 6d2 7s2 |
Valence (Valency) | 4 |
Main Oxidation States | 4 |
Oxidation States | 4 |
Atomic Term Symbol (Quantum Numbers) | 3F2 |
Bohr Atomic Model of Rutherfordium - Electrons per energy level

n | s | p | d | f |
---|
Ground State Electronic Configuration of Rutherfordium - neutral Rutherfordium atom
Abbreviated electronic configuration of Rutherfordium
The ground state abbreviated electronic configuration of Neutral Rutherfordium atom is [Rn] 5f14 6d2 7s2. The portion of Rutherfordium 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 6d2 7s2, electrons in the outermost shell that determine the chemical properties of the element.
Unabbreviated electronic configuration of neutral Rutherfordium
Complete ground state electronic configuration for the Rutherfordium atom, Unabbreviated electronic configuration
1s2 2s2 2p6 3s2 3p6 3d10 4s2 4p6 4d10 5s2 5p6 4f14 5d10 6s2 6p6 5f14 6d2 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 Rutherfordium
Rutherfordium 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 Rutherfordium
Rutherfordium Chemical Properties: Rutherfordium Ionization Energies and electron affinity
The electron affinity of Rutherfordium is - .
Valence | 4 |
Electronegativity | - |
ElectronAffinity | - |
Ionization Energy of Rutherfordium
Refer to table below for Ionization energies of Rutherfordium
Ionization energy number | Enthalpy - kJ/mol |
---|---|
1st | 580 |
Rutherfordium Physical Properties
Refer to below table for Rutherfordium Physical Properties
Density | - |
Molar Volume | - |
Elastic Properties
Young Modulus | - |
Shear Modulus | - |
Bulk Modulus | - |
Poisson Ratio | - |
Hardness of Rutherfordium - Tests to Measure of Hardness of Element
Mohs Hardness | - |
Vickers Hardness | - |
Brinell Hardness | - |
Rutherfordium Electrical Properties
Rutherfordium is Conductor of electricity. Refer to table below for the Electrical properties ofRutherfordium
Electrical Conductivity | - |
Resistivity | - |
Superconducting Point | - |
Rutherfordium Heat and Conduction Properties
Thermal Conductivity | - |
Thermal Expansion | - |
Rutherfordium Magnetic Properties
Magnetic Type | - |
Curie Point | - |
Mass Magnetic Susceptibility | - |
Molar Magnetic Susceptibility | - |
Volume Magnetic Susceptibility | - |
Optical Properties of Rutherfordium
Refractive Index | - |
Acoustic Properties of Rutherfordium
Speed of Sound | - |
Rutherfordium Thermal Properties - Enthalpies and thermodynamics
Refer to table below for Thermal properties of Rutherfordium
Melting Point | - (-273.15°C, -459.66999999999996 °F) |
Boiling Point | - (-273.15°C, -459.66999999999996 °F) |
Critical Temperature | - |
Superconducting Point | - |
Enthalpies of Rutherfordium
Heat of Fusion | - |
Heat of Vaporization | - |
Heat of Combustion | - |
Rutherfordium Isotopes - Nuclear Properties of Rutherfordium
Rutherfordium has 16 isotopes, with between 253 and 268 nucleons. Rutherfordium has 0 stable naturally occuring isotopes.
Isotopes of Rutherfordium - Naturally occurring stable Isotopes: -.
Isotope | Z | N | Isotope Mass | % Abundance | T half | Decay Mode |
---|---|---|---|---|---|---|
253Rf | 104 | 149 | 253 | Synthetic | ||
254Rf | 104 | 150 | 254 | Synthetic | ||
255Rf | 104 | 151 | 255 | Synthetic | ||
256Rf | 104 | 152 | 256 | Synthetic | ||
257Rf | 104 | 153 | 257 | Synthetic | ||
258Rf | 104 | 154 | 258 | Synthetic | ||
259Rf | 104 | 155 | 259 | Synthetic | ||
260Rf | 104 | 156 | 260 | Synthetic | ||
261Rf | 104 | 157 | 261 | Synthetic | 13.1 h | AlphaEmission |
262Rf | 104 | 158 | 262 | Synthetic | ||
263Rf | 104 | 159 | 263 | Synthetic | ||
264Rf | 104 | 160 | 264 | Synthetic | ||
265Rf | 104 | 161 | 265 | Synthetic | ||
266Rf | 104 | 162 | 266 | Synthetic | ||
267Rf | 104 | 163 | 267 | Synthetic | ||
268Rf | 104 | 164 | 268 | 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) | CAS53850-36-5 |
RTECS Number | - |
CID Number | - |
Gmelin Number | - |
NSC Number | - |
Compare Rutherfordium with other elements
Compare Rutherfordium with all Group 4 elements
Compare Rutherfordium with all Period 7 elements
Compare Rutherfordium with all Transition Metal elements
FAQs
What is the electronic configuration of Rutherfordium?
The electronic configuration of Rutherfordium is 1s2 2s2 2p6 3s2 3p6 3d10 4s2 4p6 4d10 5s2 5p6 4f14 5d10 6s2 6p6 5f14 6d2 7s2.
What is the abbreviated electronic configuration of Rutherfordium?
The abbreviated electronic configuration of Rutherfordium is [Rn] 5f14 6d2 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 Rutherfordium?
Symbol of Rutherfordium is Rf. Rutherfordium is a chemical element with symbol Rf and atomic number 104.
What is the position of Rutherfordium in the Periodic Table?
Rutherfordium is a chemical element with the symbol Rf and atomic number 104. Rutherfordium is the 104 element on the periodic table. It is located in group 4 and period 7 in the modern periodic table.
What is the atomic number of Rutherfordium?
The atomic number of Rutherfordium is 104.
What is the color of Rutherfordium?
Rutherfordium is of color.
Who discovered Rutherfordium?
The element Rutherfordium was discovered by A. Ghiorso,M. Nurmia,J. Harris,K. Eskola and P. Eskola in year 1969 in Russia and United States. Rutherfordium was first isolated by undefined in undefined.
How many valence electrons does a Rutherfordium atom have?
Rutherfordium has 4 valence electrons. Rutherfordium has 104 electrons out of which 4 valence electrons are present in the 6d2 7s2 outer orbitals of atom.
What is the melting Point of Rutherfordium?
Melting Point of Rutherfordium is null K.
What is the boiling Point of Rutherfordium?
Boiling Point of Rutherfordium is null K.
What is the melting Point of Rutherfordium in Kelvin?
Melting Point of Rutherfordium in Kelvin is null K.
What is the boiling Point of Rutherfordium in Kelvin?
Boiling Point of Rutherfordium in Kelvin is null K.
What is the electronic configuration of Rutherfordium 104?
The electronic configuration of Rutherfordium will be 1s2 2s2 2p6 3s2 3p6 3d10 4s2 4p6 4d10 5s2 5p6 4f14 5d10 6s2 6p6 5f14 6d2 7s2.
How do you write the electron configuration for Rutherfordium?
The electronic configuration of Rutherfordium will be 1s2 2s2 2p6 3s2 3p6 3d10 4s2 4p6 4d10 5s2 5p6 4f14 5d10 6s2 6p6 5f14 6d2 7s2.