Erbium Element (Periodic Table)

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
Youngs 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 dβ169Tm
170Er14.910 %stable
171Ersyn7.516 hβ171Tm
172Ersyn49.3 hβ172Tm

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