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Es Einsteinium
Element Information, Facts, Properties, Trends, Uses, Comparison with other elements

99
Es
Einsteinium
Element 99 of Periodic table is Einsteinium with atomic number 99, atomic weight 252. Einsteinium, symbol Es, has a Face Centered Cubic structure and color. Einsteinium is a Actinide element. It is part of group null (). Know everything about Einsteinium Facts, Physical Properties, Chemical Properties, Electronic configuration, Atomic and Crystal Structure.
99 Es - Einsteinium | SchoolMyKids

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 null of the periodic table having trivial name . You can also download Printable Periodic Table of Elements Flashcards for Einsteinium in a PDF format.

Einsteinium Facts

Read key information and facts about element Einsteinium

NameEinsteinium
Atomic Number99
Atomic SymbolEs
Atomic Weight252
PhaseSolid
Color-
Appearancesilver-colored
ClassificationActinide
Natural OccuranceSynthetic
Group in Periodic Table-
Group Name
Period in Periodic Tableperiod 7
Block in Periodic Tablef-block
Electronic Configuration[Rn] 5f11 7s2
Electronic Shell Structure (Electrons per shell)2, 8, 18, 32, 29, 8, 2
Melting Point1133 K
Boiling Point-
CAS NumberCAS7429-92-7
Neighborhood Elements
123456789101112131415161718
1
1
H
Hydrogen
1.008

Atomic #

Electronic Shell #

Symbol
Name
Atomic Weight
HGas
HgLiquid
CSolid
Metals
Metalloids
NonMetals
Alkali metals
Alkali earth metals
Lanthanoids
Transition metals
Post-transition metals
Other nonmetals
Halogens
Nobel gas
Actinoids
2
He
Helium
4.003
2
3
Li
Lithium
6.941
4
Be
Beryllium
9.012
5
B
Boron
10.811
6
C
Carbon
12.011
7
N
Nitrogen
14.007
8
O
Oxygen
15.999
9
F
Fluorine
18.998
10
Ne
Neon
20.180
3
11
Na
Sodium
22.990
12
Mg
Magnesium
24.305
13
Al
Aluminium
26.982
14
Si
Silicon
28.085
15
P
Phosphorus
30.974
16
S
Sulfur
32.065
17
Cl
Chlorine
35.453
18
Ar
Argon
39.948
4
19
K
Potassium
39.098
20
Ca
Calcium
40.078
21
Sc
Scandium
44.956
22
Ti
Titanium
47.867
23
V
Vanadium
50.941
24
Cr
Chromium
51.996
25
Mn
Manganese
54.938
26
Fe
Iron
55.845
27
Co
Cobalt
58.933
28
Ni
Nickel
58.693
29
Cu
Copper
63.546
30
Zn
Zinc
65.409
31
Ga
Gallium
69.723
32
Ge
Germanium
72.640
33
As
Arsenic
74.922
34
Se
Selenium
78.960
35
Br
Bromine
79.904
36
Kr
Krypton
83.798
5
37
Rb
Rubidium
85.468
38
Sr
Strontium
87.620
39
Y
Yttrium
88.906
40
Zr
Zirconium
91.224
41
Nb
Niobium
92.906
42
Mo
Molybdenum
95.940
43
Tc
Technetium
98
44
Ru
Ruthenium
101.070
45
Rh
Rhodium
102.906
46
Pd
Palladium
106.420
47
Ag
Silver
107.868
48
Cd
Cadmium
112.411
49
In
Indium
114.818
50
Sn
Tin
118.710
51
Sb
Antimony
121.760
52
Te
Tellurium
127.600
53
I
Iodine
126.904
54
Xe
Xenon
131.293
6
55
Cs
Cesium
132.905
56
Ba
Barium
137.327
57 - 71
La - Lu
Lanthanides
72
Hf
Hafnium
178.490
73
Ta
Tantalum
180.948
74
W
Tungsten
183.840
75
Re
Rhenium
186.207
76
Os
Osmium
190.230
77
Ir
Iridium
192.217
78
Pt
Platinum
195.078
79
Au
Gold
196.967
80
Hg
Mercury
200.590
81
Tl
Thallium
204.383
82
Pb
Lead
207.200
83
Bi
Bismuth
208.980
84
Po
Polonium
209
85
At
Astatine
210
86
Rn
Radon
222
7
87
Fr
Francium
223
88
Ra
Radium
226
89 - 103
Ac - Lr
Actinides
104
Rf
Rutherfordium
261
105
Db
Dubnium
262
106
Sg
Seaborgium
266
107
Bh
Bohrium
264
108
Hs
Hassium
269
109
Mt
Meitnerium
268
110
Ds
Darmstadtium
281
111
Rg
Roentgenium
272
112
Cn
Copernicium
285
113
Nh
Nihonium
284
114
Fl
Flerovium
289
115
Mc
Moscovium
288
116
Lv
Livermorium
292
117
Ts
Tennessine
294
118
Og
Oganesson
294
Lanthanides
57
La
Lanthanum
138.905
58
Ce
Cerium
140.116
59
Pr
Praseodymium
140.908
60
Nd
Neodymium
144.240
61
Pm
Promethium
145
62
Sm
Samarium
150.360
63
Eu
Europium
151.964
64
Gd
Gadolinium
157.250
65
Tb
Terbium
158.925
66
Dy
Dysprosium
162.500
67
Ho
Holmium
164.930
68
Er
Erbium
167.259
69
Tm
Thulium
168.934
70
Yb
Ytterbium
173.040
71
Lu
Lutetium
174.967
Actinides
89
Ac
Actinium
227
90
Th
Thorium
232.038
91
Pa
Protactinium
231.036
92
U
Uranium
238.029
93
Np
Neptunium
237
94
Pu
Plutonium
244
95
Am
Americium
243
96
Cm
Curium
247
97
Bk
Berkelium
247
98
Cf
Californium
251
99
Es
Einsteinium
252
100
Fm
Fermium
257
101
Md
Mendelevium
258
102
No
Nobelium
259
103
Lr
Lawrencium
262

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.

Discovered By A. Ghiorso et al.(Argonne Laboratory, Los Alamos Laboratory and University of California, Berkeley)
Discovery Date 1952 in United States
First Isolation 1952
Isolated by

Formed in the first thermonuclear explosion in November 1952, by irradiation of uranium with neutrons; kept secret for several years.

Einsteinium Uses

The element Einsteinium has No uses outside scientific research. Since element Einsteinium has extremely short half-lives

Einsteinium Presence: Abundance in Nature and Around Us

As Einsteinium is a Synthetic element, the abundance of Einsteinium in Universe, Sun, Meteorites, Earth's Crust, Oceans and Human Body in either not known or they have a very short half life.

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)

abc

and the angles between them Lattice Angles (alpha, beta and gamma).

alphabetagamma

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 StructureFace Centered Cubic
Number of atoms per unit cell4
99 Es Einsteinium - Crystal Structure | SchoolMyKids

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 Number99
Number of Electrons (with no charge)99
Number of Protons99
Mass Number252
Number of Neutrons153
Shell structure (Electrons per energy level)2, 8, 18, 32, 29, 8, 2
Electron Configuration[Rn] 5f11 7s2
Valence Electrons5f11 7s2
Valence (Valency)4
Main Oxidation States3
Oxidation States2, 3, 4
Atomic Term Symbol (Quantum Numbers)5I15/2

Bohr Atomic Model of Einsteinium - Electrons per energy level

99 Es Einsteinium Electron Shell Structure | SchoolMyKids
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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.

  • As per the Aufbau principle the electrons will occupy the orbitals having lower energies before occupying higher energy orbitals. According to this principle, electrons are filled in the following order: 1s, 2s, 2p, 3s, 3p, 4s, 3d, 4p, 5s, 4d, 5p, 6s, 4f, 5d, 6p, 7s, 5f, 6d, 7p…
  • The Pauli exclusion principle states that a maximum of two electrons, each having opposite spins, can fit in an orbital.
  • Hund's rule states that every orbital in a given subshell is singly occupied by electrons before a second electron is filled in an orbital.
  • Electron configuration of Einsteinium
    Atomic Structure of Einsteinium

    Einsteinium atomic radius is -, while it's covalent radius is -.

    Atomic Radius Calculated

    -

    Atomic Radius Empirical

    -

    Atomic Volume28.52 cm3/mol
    Covalent Radius-
    Van der Waals Radius-
    Neutron Cross Section160
    Neutron Mass Absorption -

    Spectral Lines of Einsteinium - Atomic Spectrum of Einsteinium

    A spectral line is a dark or bright line in an otherwise uniform and continuous spectrum, resulting from an excess or deficiency of photons in a narrow frequency range, compared with the nearby frequencies. Spectral lines are often used to identify atoms and molecules.

    Spectral lines are the result of interaction between a quantum system and a single photon. A spectral line may be observed either as an emission line or an absorption line.

    Spectral lines are highly atom-specific, and can be used to identify the chemical composition of any medium. Several elements, including helium, thallium, and caesium, were discovered by spectroscopic means. They are widely used to determine the physical conditions of stars and other celestial bodies that cannot be analyzed by other means.

    Emission spectrum of Einsteinium

    Emission spectrum of Einsteinium is not available

    Absorption spectrum of Einsteinium

    Absorption Spectrum of Einsteinium | SchoolMyKids

    Einsteinium Chemical Properties: Einsteinium Ionization Energies and electron affinity

    The electron affinity of Einsteinium is -.

    Valence4
    Electronegativity1.3
    ElectronAffinity-

    Ionization Energy of Einsteinium

    Ionization energy is the amount of energy required to remove an electron from an atom or molecule.in chemistry, this energy is expresed in kilocalories per mole (kcal/mol) or kilojoules per mole (kJ/mol).

    Refer to table below for Ionization energies of Einsteinium

    Ionization energy numberEnthalpy - kJ/mol
    1st619

    Einsteinium Physical Properties

    Refer to below table for Einsteinium Physical Properties

    Density-
    Molar Volume28.52 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

    Electrical resistivity measures element's electrical resistance or how strongly it resists electric current.The SI unit of electrical resistivity is the ohm-metre (Ω⋅m). While Electrical conductivity is the reciprocal of electrical resistivity. It represents a element's ability to conduct electric current. The SI unit of electrical conductivity is siemens per metre (S/m).

    Einsteinium is a -. Refer to table below for the Electrical properties of Einsteinium

    Electrical conductors -
    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 Point1133 K(859.85 °C, 1579.730 °F)
    Boiling Point-
    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: -.

    IsotopeZNIsotope Mass% AbundanceT halfDecay Mode
    240Es99141240Synthetic
    241Es99142241Synthetic
    242Es99143242Synthetic
    243Es99144243Synthetic
    244Es99145244Synthetic
    245Es99146245Synthetic
    246Es99147246Synthetic
    247Es99148247Synthetic
    248Es99149248Synthetic
    249Es99150249Synthetic
    250Es99151250Synthetic
    251Es99152251Synthetic
    252Es99153252Synthetic1.2922 yearsAlphaEmission
    253Es99154253Synthetic
    254Es99155254Synthetic
    255Es99156255Synthetic
    256Es99157256Synthetic
    257Es99158257Synthetic
    258Es99159258Synthetic

    Regulatory and Health - Health and Safety Parameters and Guidelines

    The United States Department of Transportation (DOT) identifies hazard class of all dangerous elements/goods/commodities either by its class (or division) number or name. The DOT has divided these materials into nine different categories, known as Hazard Classes.

    NFPA 704 is a Standard System for the Identification of the Hazards of Materials for Emergency Response. NFPA is a standard maintained by the US based National Fire Protection Association.

    The health (blue), flammability (red), and reactivity (yellow) rating all use a numbering scale ranging from 0 to 4. A value of zero means that the element poses no hazard; a rating of four indicates extreme danger.

    Autoignition Point-
    Flashpoint-

    Database Search

    List of unique identifiers to search the element in various chemical registry databases

    DatabaseIdentifier 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 Unknown.

    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 Unknown.

    What is the melting Point of Einsteinium in Celsius?

    Melting Point of Einsteinium in Celsius is 859.85 °C.

    What is the boiling Point of Einsteinium in Celsius?

    Boiling Point of Einsteinium in Celsius is Unknown.

    What is the melting Point of Einsteinium in Fahrenheit?

    Melting Point of Einsteinium in Fahrenheit is 1579.73 °F.

    What is the boiling Point of Einsteinium in Fahrenheit?

    Boiling Point of Einsteinium in Fahrenheit is Unknown.

    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.