Es Einsteinium
Element Information, Facts, Properties, Trends, Uses, Comparison with other elements
Einsteinium is a synthetic element with symbol Es and atomic number 99. It is the seventh transuranic element, and an Actinide. Einsteinium was discovered as a component of the debris of the first hydrogen bomb explosion in 1952, and named after Albert Einstein.
It belongs to group of the periodic table having trivial name .
Einsteinium Facts
Read key information and facts about element Einsteinium
| Name | Einsteinium |
| Atomic Number | 99 |
| Atomic Symbol | Es |
| Atomic Weight | 252 |
| Phase | Solid |
| Color | - |
| Appearance | silver-colored |
| Classification | Actinide |
| Group in Periodic Table | - |
| Group Name | |
| Period in Periodic Table | period 7 |
| Block in Periodic Table | f -block |
| Electronic Configuration | [Rn] 5f11 7s2 |
| Electronic Shell Structure (Electrons per shell) | 2, 8, 18, 32, 29, 8, 2 |
| Melting Point | 1133 K |
| Boiling Point | - |
| CAS Number | CAS7429-92-7 |
How to Locate Einsteinium 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 99 to find Einsteinium 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 Einsteinium on periodic table look for cross section of group - and period 7 in the modern periodic table.
Einsteinium History
The element Einsteinium was discovered by A. Ghiorso et al.(Argonne Laboratory, Los Alamos Laboratory and University of California, Berkeley) in year 1952 in United States. Einsteinium was first isolated by in 1952. Einsteinium derived its name from Albert Einstein, physicist.
Formed in the first thermonuclear explosion in November 1952, by irradiation of uranium with neutrons; kept secret for several years.
Einsteinium Presence: Abundance in Nature and Around Us
The table below shows the abundance of Einsteinium 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 Einsteinium
The solid state structure of Einsteinium 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.
Einsteinium Atomic and Orbital Properties
Einsteinium atoms have 99 electrons and the electronic shell structure is [2, 8, 18, 32, 29, 8, 2] with Atomic Term Symbol (Quantum Numbers) 5I15/2.
| Atomic Number | 99 |
| Number of Electrons (with no charge) | 99 |
| Number of Protons | 99 |
| Mass Number | 252 |
| Number of Neutrons | 153 |
| Shell structure (Electrons per energy level) | 2, 8, 18, 32, 29, 8, 2 |
| Electron Configuration | [Rn] 5f11 7s2 |
| Valence Electrons | 5f11 7s2 |
| Valence (Valency) | 4 |
| Main Oxidation States | 3 |
| Oxidation States | 2, 3, 4 |
| Atomic Term Symbol (Quantum Numbers) | 5I15/2 |
Bohr Atomic Model of Einsteinium - Electrons per energy level
| n | s | p | d | f |
|---|
Ground State Electronic Configuration of Einsteinium - neutral Einsteinium atom
Abbreviated electronic configuration of Einsteinium
The ground state abbreviated electronic configuration of Neutral Einsteinium atom is [Rn] 5f11 7s2. The portion of Einsteinium 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 5f11 7s2, electrons in the outermost shell that determine the chemical properties of the element.
Unabbreviated electronic configuration of neutral Einsteinium
Complete ground state electronic configuration for the Einsteinium atom, Unabbreviated electronic configuration
1s2 2s2 2p6 3s2 3p6 3d10 4s2 4p6 4d10 5s2 5p6 4f14 5d10 6s2 6p6 5f11 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 Einsteinium
Einsteinium atomic radius is - , while it's covalent radius is - .
| Atomic Radius Calculated | - (0 Å) |
| Atomic Radius Empirical | - (0 Å) |
| Atomic Volume | 28.52 cm3/mol |
| Covalent Radius | - |
| Van der Waals Radius | - |
| Neutron Cross Section | 160 |
| Neutron Mass Absorption | - |
Atomic Spectrum of Einsteinium
Einsteinium Chemical Properties: Einsteinium Ionization Energies and electron affinity
The electron affinity of Einsteinium is - .
| Valence | 4 |
| Electronegativity | 1.3 |
| ElectronAffinity | - |
Ionization Energy of Einsteinium
Refer to table below for Ionization energies of Einsteinium
| Ionization energy number | Enthalpy - kJ/mol |
|---|---|
| 1st | 619 |
Einsteinium Physical Properties
Refer to below table for Einsteinium Physical Properties
| Density | - |
| Molar Volume | 28.52 cm3/mol |
Elastic Properties
| Young Modulus | - |
| Shear Modulus | - |
| Bulk Modulus | - |
| Poisson Ratio | - |
Hardness of Einsteinium - Tests to Measure of Hardness of Element
| Mohs Hardness | - |
| Vickers Hardness | - |
| Brinell Hardness | - |
Einsteinium Electrical Properties
Einsteinium is Conductor of electricity. Refer to table below for the Electrical properties ofEinsteinium
| Electrical Conductivity | - |
| Resistivity | - |
| Superconducting Point | - |
Einsteinium Heat and Conduction Properties
| Thermal Conductivity | - |
| Thermal Expansion | - |
Einsteinium Magnetic Properties
| Magnetic Type | - |
| Curie Point | - |
| Mass Magnetic Susceptibility | - |
| Molar Magnetic Susceptibility | - |
| Volume Magnetic Susceptibility | - |
Optical Properties of Einsteinium
| Refractive Index | - |
Acoustic Properties of Einsteinium
| Speed of Sound | - |
Einsteinium Thermal Properties - Enthalpies and thermodynamics
Refer to table below for Thermal properties of Einsteinium
| Melting Point | 1133 K (859.85°C, 1579.73 °F) |
| Boiling Point | - (-273.15°C, -459.66999999999996 °F) |
| Critical Temperature | - |
| Superconducting Point | - |
Enthalpies of Einsteinium
| Heat of Fusion | - |
| Heat of Vaporization | - |
| Heat of Combustion | - |
Einsteinium Isotopes - Nuclear Properties of Einsteinium
Einsteinium has 19 isotopes, with between 240 and 258 nucleons. Einsteinium has 0 stable naturally occuring isotopes.
Isotopes of Einsteinium - Naturally occurring stable Isotopes: -.
| Isotope | Z | N | Isotope Mass | % Abundance | T half | Decay Mode |
|---|---|---|---|---|---|---|
| 240Es | 99 | 141 | 240 | Synthetic | ||
| 241Es | 99 | 142 | 241 | Synthetic | ||
| 242Es | 99 | 143 | 242 | Synthetic | ||
| 243Es | 99 | 144 | 243 | Synthetic | ||
| 244Es | 99 | 145 | 244 | Synthetic | ||
| 245Es | 99 | 146 | 245 | Synthetic | ||
| 246Es | 99 | 147 | 246 | Synthetic | ||
| 247Es | 99 | 148 | 247 | Synthetic | ||
| 248Es | 99 | 149 | 248 | Synthetic | ||
| 249Es | 99 | 150 | 249 | Synthetic | ||
| 250Es | 99 | 151 | 250 | Synthetic | ||
| 251Es | 99 | 152 | 251 | Synthetic | ||
| 252Es | 99 | 153 | 252 | Synthetic | 1.2922 years | AlphaEmission |
| 253Es | 99 | 154 | 253 | Synthetic | ||
| 254Es | 99 | 155 | 254 | Synthetic | ||
| 255Es | 99 | 156 | 255 | Synthetic | ||
| 256Es | 99 | 157 | 256 | Synthetic | ||
| 257Es | 99 | 158 | 257 | Synthetic | ||
| 258Es | 99 | 159 | 258 | 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) | CAS7429-92-7 |
| RTECS Number | - |
| CID Number | - |
| Gmelin Number | - |
| NSC Number | - |
Compare Einsteinium with other elements
Compare Einsteinium with all Group elements
Compare Einsteinium with all Period 7 elements
Compare Einsteinium with all Actinide elements
FAQs
What is the electronic configuration of Einsteinium?
The electronic configuration of Einsteinium is 1s2 2s2 2p6 3s2 3p6 3d10 4s2 4p6 4d10 5s2 5p6 4f14 5d10 6s2 6p6 5f11 7s2.
What is the abbreviated electronic configuration of Einsteinium?
The abbreviated electronic configuration of Einsteinium is [Rn] 5f11 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 Einsteinium?
Symbol of Einsteinium is Es. Einsteinium is a chemical element with symbol Es and atomic number 99.
What is the position of Einsteinium in the Periodic Table?
Einsteinium is a chemical element with the symbol Es and atomic number 99. Einsteinium is the 99 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 Einsteinium?
The atomic number of Einsteinium is 99.
What is the color of Einsteinium?
Einsteinium is of color.
Who discovered Einsteinium?
The element Einsteinium was discovered by A. Ghiorso et al.(Argonne Laboratory, Los Alamos Laboratory and University of California, Berkeley) in year 1952 in United States. Einsteinium was first isolated by undefined in 1952.
How many valence electrons does a Einsteinium atom have?
Einsteinium has 4 valence electrons. Einsteinium has 99 electrons out of which 4 valence electrons are present in the 5f11 7s2 outer orbitals of atom.
What is the melting Point of Einsteinium?
Melting Point of Einsteinium is 1133 K.
What is the boiling Point of Einsteinium?
Boiling Point of Einsteinium is null K.
What is the melting Point of Einsteinium in Kelvin?
Melting Point of Einsteinium in Kelvin is 1133 K.
What is the boiling Point of Einsteinium in Kelvin?
Boiling Point of Einsteinium in Kelvin is null K.
What is the electronic configuration of Einsteinium 99?
The electronic configuration of Einsteinium will be 1s2 2s2 2p6 3s2 3p6 3d10 4s2 4p6 4d10 5s2 5p6 4f14 5d10 6s2 6p6 5f11 7s2.
How do you write the electron configuration for Einsteinium?
The electronic configuration of Einsteinium will be 1s2 2s2 2p6 3s2 3p6 3d10 4s2 4p6 4d10 5s2 5p6 4f14 5d10 6s2 6p6 5f11 7s2.