Holmium Element (Periodic Table)

Holmium

Holmium (Ho) is a chemical element of the periodic table, located in the period 6, and has the atomic number 67. It is the eleventh element in the lanthanide series. It is a soft, malleable, silvery-white metal, whose name comes from “Holmia”, Latin name for the city of Stockholm. It is a highly reactive metal 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 Holmium Element

Holmium
‣ What does holmium look like?

Appearance: silvery white
‣ Who discovered holmium? When was holmium discovered?

Discovery: Jacques-Louis Soret and Marc Delafontaine (1878)
‣ Where is holmium found on the periodic table?

Holmium Periodic Table

Location: Holmium is found in the sixth row of the periodic table, next to the dysprosium element.
‣ What is holmium atomic mass number?

Atomic number (Z): 67
‣ What is the symbol for holmium?

Symbol: Ho
‣ What is the atomic weight for holmium?

Standard atomic weight: 164.930328
‣ Holmium is which block element?

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

Period: 6
Holmium atomic radius: empirical: 176 pm
Holmium covalent radius: 192±7 pm
‣ What is the melting point of holmium?

Melting point: 1734 K (1461 °C, 2662 °F)
‣ What is holmium boiling point?

Boiling point: 2873 K (2600 °C, 4712 °F)
‣ How many electron shells does holmium have?

Electrons per shell: 2, 8, 18, 29, 8, 2
‣ What is the electron configuration of holmium?

Electron configuration: [Xe] 4f11 6s2
Holmium ionization energies:
1st: 581.0 kJ/mol
2nd: 1140 kJ/mol
3rd: 2204 kJ/mol
‣ What is the phase of holmium?

Phase (at r.t): solid
‣ Density of the element holmium

Density (near r.t): 8.79 g/cm3
when liquid (at m.p):8.34 g/cm3
Holmium magnetic ordering: paramagnetic
Holmium natural occurrence: primordial
Holmium oxidation state: +3
Holmium electronegativity: Pauling scale: 1.23
Holmium poisson’s ratio: 0.231
Holmium heat of fusion: 17.0 kJ/mol
Holmium heat of vaporization: 251 kJ/mol
Holmium molar heat capacity: 27.15 J/(mol K)
Speed of sound in holmium: 2760 m/s (at 20 °C)
‣ What is the crystal structure of holmium?

Crystal structure: hexagonal close-packed (hcp)
Thermal expansion of holmium: poly: 11.2 µm/(m.K) (ar r.t)
Thermal conductivity of holmium: 16.2 W/(m.K)
Holmium electrical resistivity: poly: 814 nΩ.m (at r.t)
‣ Holmium hardness

Vickers hardness: 410-600 MPa
Brinell hardness: 500-1250 MPa
Young’s modulus of holmium: 64.8 GPa
Shear modulus of holmium: 26.3 GPa
Bulk modulus of holmium: 40.2 GPa
Holmium CAS number: 7440-60-0

‣ Holmium vapor pressure

Vapor pressure
P (Pa)1101001 k10 k100 k
at T (K)14321584(1775)(2040)(2410)(2964)

‣ How many isotopes does holmium have?

Main isotopes of holmium
IsotopeAbundanceHalf-life (t1/2)Decay modeProduct
163Hosyn4570 yε163Dy
164Hosyn29 minε164Dy
165Ho100 %stable
166Hosyn26.763 hβ166Er
167Hosyn3.1 hβ167Er

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