Erbium Element (Periodic Table)

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Erbium

Erbium (Er) is a chemical element of the periodic table, located in the period 6, and has the atomic number 68. It is the twelfth element in the lanthanide series. It is a soft, malleable, lustrous, silvery-white metal, which is named after Ytterby, a village in Sweden, where it was mined. It is never found freely in nature and is counted as one of the rare earth elements.

group
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
period
1
 1
H
 2
He
2
 3
Li
 4
Be
 5
B
 6
C
 7
N
 8
O
 9
F
 10
Ne
3
 11
Na
 12
Mg
 13
Al
 14
Si
 15
P
 16
S
 17
Cl
 18
Ar
4
 19
K
 20
Ca
 21
Sc
 22
Ti
 23
V
 24
Cr
 25
Mn
 26
Fe
 27
Co
 28
Ni
 29
Cu
 30
Zn
 31
Ga
 32
Ge
 33
As
 34
Se
 35
Br
 36
Kr
5
 37
Rb
 38
Sr
 39
Y
 40
Zr
 41
Nb
 42
Mo
 43
Tc
 44
Ru
 45
Rh
 46
Pd
 47
Ag
 48
Cd
 49
In
 50
Sn
 51
Sb
 52
Te
 53
I
 54
Xe
6
 55
Cs
 56
Ba
 72
Hf
 73
Ta
 74
W
 75
Re
 76
Os
 77
Ir
 78
Pt
 79
Au
 80
Hg
 81
Tl
 82
Pb
 83
Bi
 84
Po
 85
At
 86
Rn
7
 87
Fr
 88
Ra
 104
Rf
 105
Db
 106
Sg
 107
Bh
 108
Hs
 109
Mt
 110
Ds
 111
Rg
 112
Cn
 113
Nh
 114
Fl
 115
Mc
 116
Lv
 117
Ts
 118
Og
57
La
 58
Ce
 59
Pr
 60
Nd
 61
Pm
 62
Sm
 63
Eu
 64
Gd
 65
Tb
 66
Dy
 67
Ho
 68
Er
 69
Tm
 70
Yb
 71
Lu
89
Ac
 90
Th
 91
Pa
 92
U
 93
Np
 94
Pu
 95
Am
 96
Cm
 97
Bk
 98
Cf
 99
Es
 100
Fm
 101
Md
 102
No
 103
Lr
– f block

FAQs on Erbium Element

Erbium
‣ What does erbium look like?

Appearance: silvery white
‣ When was the element erbium discovered and by who?

Discovery: Carl Gustaf Mosander (1843)
‣ Where is erbium found on the periodic table?

Erbium Periodic Table

Location: Erbium is found in the sixth row of the periodic table, next to the holmium element.
‣ What’s the atomic mass number for erbium?

Atomic number (Z): 68
‣ What’s the symbol for erbium?

Symbol: Er
‣ Erbium atomic weight: 167.259
‣ Which block does erbium belong to?

Block: f-block
‣ What period is erbium on the periodic table?

Period: 6
‣ Erbium atomic radius: empirical: 176 pm
‣ Erbium covalent radius: 189±6 pm
‣ Erbium melting point: 1802 K (1529 °C, 2784 °F)
‣ What is the boiling point for erbium?

Boiling point: 3141 K (2868 °C, 5194 °F)
‣ Electrons per shell of erbium: 2, 8, 18, 30, 8, 2
‣ What is the ground state electron configuration for erbium?

Electron configuration: [Xe] 4f12 6s2
‣ Erbium ionization energies:
1st: 589.3 kJ/mol
2nd: 1150 kJ/mol
3rd: 2194 kJ/mol
‣ What is the phase of erbium?

Phase (at r.t): solid
‣ What is the density of erbium?

Density (near r.t): 9.066 g/cm3
when liquid (at m.p): 8.86 g/cm3
‣ Erbium magnetic ordering: paramagnetic at 300 K
‣ Erbium natural occurrence: primordial
‣ Erbium oxidation state: +3
‣ What is the ground state electron configuration for erbium?

Electronegativity: Pauling scale: 1.24
‣ Erbium poisson’s ratio: 0.237
‣ Erbium heat of fusion: 19.90 kJ/mol
‣ Erbium heat of vaporization: 280 kJ/mol
‣ Erbium molar heat capacity: 28.12 J/(mol K)
‣ Erbium molar magnetic susceptibility: +44300.00 × 10-6 cm3/mol
‣ Speed of sound in erbium: 2830 m/s (at 20 °C)
‣ What is the crystal structure of erbium?

Crystal structure: hexagonal close-packed (hcp)
‣ Thermal expansion of erbium: poly: 12.2 µm/(m.K) (r.t)
‣ Thermal conductivity of erbium: 14.5 W/(m.K)
‣ Erbium electrical resistivity: poly: 0.860 µΩ.m (at r.t)
‣ Erbium hardness

Vickers hardness: 430-700 MPa
Brinell hardness: 700-1070 MPa
‣ Young’s modulus of erbium: 69.9 GPa
‣ Shear modulus of erbium: 28.3 GPa
‣ Bulk modulus of erbium: 44.4 GPa
‣ Erbium CAS number: 7440-52-0

‣ Erbium vapor pressure

Vapor pressure
P (Pa)1101001 k10 k100 k
at T (K)15041663(1885)(2163)(2552)(3132)

‣ How many erbium isotopes are there?

Main isotopes of erbium
IsotopeAbundanceHalf-life (t1/2)Decay modeProduct
160Ersyn28.58 hε160Ho
162Er0.139 %stable
164Er1.601 %10.36 hstable
165Ersynε165Ho
166Er33.503 %stable
167Er22.869 %stable
168Er26.978 %stable
169Ersyn9.4 dβ–169Tm
170Er14.910 %stable
171Ersyn7.516 hβ–171Tm
172Ersyn49.3 hβ–172Tm

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