Thulium Element (Periodic Table)

by
Thulium

Thulium (Tm) is a chemical element of the periodic table, located in the period 6, and has the atomic number 69. It is the thirteenth element in the lanthanide series. It is a bright, silvery-gray metal, whose name comes from “Thule”, the ancient name for Scandinavia. It is not available 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 Thulium Element

Thulium
‣ What does the thulium look like?

Appearance: silvery grey
‣ Who discovered thulium? When was the element thulium discovered?

Discovery and first isolation: Per Teodor Cleve (1879)
‣ Location of thulium on the periodic table

Thulium Periodic Table

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

Atomic number (Z): 69
‣ Thulium symbol: Tm
‣ Thulium atomic weight: 168.934218
‣ What block is thulium in the periodic table?

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

Period: 6
‣ Thulium atomic radius: empirical: 176 pm
‣ Thulium covalent radius: 190±10 pm
‣ Thulium melting point: 1818 K (1545 °C, 2813 °F)
‣ Thulium boiling point: 2223 K (1950 °C, 3542 °F)
‣ How many electron shells does lithium have?

Electrons per shell: 2, 8, 18, 31, 8, 2
‣ What is the electron configuration of lithium?

Electron configuration: [Xe] 4f13 6s2
‣ What is lithium ionization energy?

Ionization energies:
1st: 596.7 kJ/mol
2nd: 1160 kJ/mol
3rd: 2285 kJ/mol
‣ Is lithium solid at room temperature?

Phase (at r.t): solid
‣ What is lithium’s density?

Density (near r.t): 9.32 g/cm3
when liquid (at m.p): 8.56 g/cm3
‣ Lithium magnetic ordering: paramagnetic (at 300 K)
‣ Lithium natural occurrence: primordial
‣ Thulium oxidation state: +2, +3
‣ What is the electronegativity of lithium?

Electronegativity: Pauling scale: 1.25
‣ Thulium poisson’s ratio: 0.213
‣ Thulium heat of fusion: 16.84 kJ/mol
‣ Thulium heat of vaporization: 191 kJ/mol
‣ Thulium molar heat capacity: 27.03 J/(mol K)
‣ Thulium molar magnetic susceptibility: +25500 × 10-6 cm3/mol (291 K)
‣ What is the crystal structure of thulium?

Crystal structure: hexagonal close-packed (hcp)
‣ Thermal expansion of thulium: poly: 13.3 µm/(m.K) (at r.t)
‣ Thermal conductivity of thulium: 16.9 W/(m.K)
‣ Thulium electrical resistivity: poly: 676 nΩ.m (at r.t)
‣ Thulium hardness

Vickers hardness: 470-650 MPa
Brinell hardness: 470-900 MPa
‣ Young’s modulus of thulium: 74.0 GPa
‣ Shear modulus of thulium: 30.5 GPa
‣ Bulk modulus of thulium: 44.5 GPa
‣ Thulium CAS number: 7440-30-4

‣ Thulium vapor pressure

Vapor pressure
P (Pa)1101001 k10 k100 k
at T (K)1117123513811570(1821)(2217)

‣ How many isotopes of thulium are there?

Main isotopes of thulium
IsotopeAbundanceHalf-life (t1/2)Decay modeProduct
167Tmsyn9.25 dε167Er
168Tmsyn93.1 dε168Er
169Tm100 %stable
170Tmsyn128.6 dβ–170Yb
171Tmsyn1.92 yβ–171Yb

.
.
.

Related:

Also Read:

Leave a Comment