Tal·li

Tal·li (Tl)

chemical element with symbol Tl and atomic number 81
Atomic Number81
Atomic Weight204.38
Rhif màs205
Group13
Period6
Blockp
Proton81 p+
Niwtron124 n0
Electron81 e-
Animated Bohr model of Tl (Tal·li)

Nodwedd Ffisegol

Atomic Radius
190 pm
molar volume
covalent radius
144 pm
Metallic Radius
144 pm
ionic radius
150 pm
Crystal Radius
164 pm
Van der Waals radius
196 pm
density
11.8 g/cm³
Atomic Radii Of The Elements: Tal·li0102030405060708090100110120130140150160170180190200pmAtomic RadiusCovalent RadiusMetallic RadiusVan der Waals radius

Nodwedd Gemegol

egni
proton affinity
electron affinity
ionization energy
6.108287 eV/particle
ionization energy of Tl (Tal·li)
enthalpy of vaporization
162.4 kJ/mol
enthalpy of fusion
4.31 kJ/mol
standard enthalpy of formation
182.2 kJ/mol
Electron
plisgyn yr electron2, 8, 18, 32, 18, 3
Bohr model: Tl (Tal·li)
valence electron3
Lewis structure: Tl (Tal·li)
trefn yr electronnau[Xe] 4f14 5d10 6s2 6p1
1s2 2s2 2p6 3s2 3p6 4s2 3d10 4p6 5s2 4d10 5p6 4f14 5d10 6s2 6p1
Enhanced Bohr model of Tl (Tal·li)
Orbital Diagram of Tl (Tal·li)
Cyflwr ocsidiad-5, -2, -1, 1, 2, 3
Electronegatifedd
1.8
Electrophilicity Index
0.9173102715055317 eV/particle
cyflwr sylfaenol mater
cyflwr materSolid
gaseous state of matter
Boiling Point
1,746.15 K
Melting Point
577.15 K
critical pressure
critical temperature
triple point
appearance
lliw
Silver
appearancesilvery white
Mynegrif plygiant
nodwedd ffisegol gwrthrych
Thermal Conductivity
46.1 W/(m K)
thermal expansion
0.0000299 1/K
molar heat capacity
26.32 J/(mol K)
Specific Heat Capacity
0.129 J/(g⋅K)
heat capacity ratio
electrical properties
typeConductor
dargludedd trydanol
6.7 MS/m
Gwrthedd
0.00000015 m Ω
superconductivity
2.38 K
magnetism
typediamagnetic
magnetic susceptibility (Mass)
-0.000000003 m³/Kg
magnetic susceptibility (Molar)
-0.000000000613 m³/mol
magnetic susceptibility (Volume)
-0.0000356
magnetic ordering
Curie temperature
Néel temperature
strwythur
Crystal StructureSimple Hexagonal (HEX)
lattice constant
3.46 Å
Lattice Anglesπ/2, π/2, 2 π/3
nodwedd mecanyddol deunyddiau
hardness
1.2 MPa
bulk modulus
43 GPa
shear modulus
2.8 GPa
Young's modulus
8 GPa
Poisson's ratio
0.45
speed of sound
818 m/s
classification
CategoryPost-transition metals, Poor metals
CAS GroupIIIB
IUPAC GroupIIIA
Glawe Number81
Mendeleev Number85
Pettifor Number78
Geochemical Class
Goldschmidt classificationchalcophile

other

Gas Basicity
polarizability
50 ± 2 a₀
C6 Dispersion Coefficient
allotrope
Neutron cross section
3.4
Neutron Mass Absorption
0.00059
quantum number2P1/2
space group194 (P63/mmc)

Isotopes of Thallium

Stable Isotopes2
Unstable Isotopes41
Natural Isotopes2
Isotopic Composition20570.49%20570.49%20329.52%20329.52%

176Tl

Rhif màs176
neutron number95
relative atomic mass
176.000627731 ± 0.000089166 Da
g-factor
natural abundance
Dadfeilio ymbelydrol☢️ elfen ymbelydrol
Hanner oes
6.2 ± 2.3 ms
spin3
nuclear quadrupole moment
dyddiad darganfod2004
parity-

decay modeintensity
p (proton emission)100%
α (α emission)
β+ (β+ decay; β+ = ϵ + e+)

177Tl

Rhif màs177
neutron number96
relative atomic mass
176.996414252 ± 0.000023218 Da
g-factor
natural abundance
Dadfeilio ymbelydrol☢️ elfen ymbelydrol
Hanner oes
18 ± 5 ms
spin1/2
nuclear quadrupole moment
0
dyddiad darganfod1999
parity+

decay modeintensity
α (α emission)73%
p (proton emission)

178Tl

Rhif màs178
neutron number97
relative atomic mass
177.995047 ± 0.00011 Da
g-factor
natural abundance
Dadfeilio ymbelydrol☢️ elfen ymbelydrol
Hanner oes
255 ± 9 ms
spin4
nuclear quadrupole moment
dyddiad darganfod1997
parity-

decay modeintensity
α (α emission)62%
β+ (β+ decay; β+ = ϵ + e+)38%
β+ SF (β+-delayed fission)0.15%

179Tl

Rhif màs179
neutron number98
relative atomic mass
178.991122185 ± 0.000041495 Da
g-factor
natural abundance
Dadfeilio ymbelydrol☢️ elfen ymbelydrol
Hanner oes
437 ± 9 ms
spin1/2
nuclear quadrupole moment
0
dyddiad darganfod1983
parity+

decay modeintensity
α (α emission)60%
β+ (β+ decay; β+ = ϵ + e+)

180Tl

Rhif màs180
neutron number99
relative atomic mass
179.98991895 ± 0.000075058 Da
g-factor
natural abundance
Dadfeilio ymbelydrol☢️ elfen ymbelydrol
Hanner oes
1.09 ± 0.01 s
spin4
nuclear quadrupole moment
dyddiad darganfod1987
parity-

decay modeintensity
β+ (β+ decay; β+ = ϵ + e+)93%
α (α emission)7%
β+ SF (β+-delayed fission)0.0032%

181Tl

Rhif màs181
neutron number100
relative atomic mass
180.986259978 ± 0.000009771 Da
g-factor
natural abundance
Dadfeilio ymbelydrol☢️ elfen ymbelydrol
Hanner oes
2.9 ± 0.1 s
spin1/2
nuclear quadrupole moment
0
dyddiad darganfod1996
parity+

decay modeintensity
β+ (β+ decay; β+ = ϵ + e+)
α (α emission)8.6%

182Tl

Rhif màs182
neutron number101
relative atomic mass
181.985692649 ± 0.000012856 Da
g-factor
natural abundance
Dadfeilio ymbelydrol☢️ elfen ymbelydrol
Hanner oes
1.9 ± 0.1 s
spin4
nuclear quadrupole moment
dyddiad darganfod1991
parity-

decay modeintensity
β+ (β+ decay; β+ = ϵ + e+)100%
α (α emission)0.49%
β+ SF (β+-delayed fission)3.4%

183Tl

Rhif màs183
neutron number102
relative atomic mass
182.982192843 ± 0.000010017 Da
g-factor
natural abundance
Dadfeilio ymbelydrol☢️ elfen ymbelydrol
Hanner oes
6.9 ± 0.7 s
spin1/2
nuclear quadrupole moment
0
dyddiad darganfod1980
parity+

decay modeintensity
β+ (β+ decay; β+ = ϵ + e+)
α (α emission)

184Tl

Rhif màs184
neutron number103
relative atomic mass
183.981874973 ± 0.000010747 Da
g-factor
natural abundance
Dadfeilio ymbelydrol☢️ elfen ymbelydrol
Hanner oes
9.5 ± 0.2 s
spin2
nuclear quadrupole moment
dyddiad darganfod1976
parity-

decay modeintensity
β+ (β+ decay; β+ = ϵ + e+)98.78%
α (α emission)1.22%

185Tl

Rhif màs185
neutron number104
relative atomic mass
184.978789189 ± 0.000022194 Da
g-factor
natural abundance
Dadfeilio ymbelydrol☢️ elfen ymbelydrol
Hanner oes
19.5 ± 0.5 s
spin1/2
nuclear quadrupole moment
0
dyddiad darganfod1976
parity+

decay modeintensity
β+ (β+ decay; β+ = ϵ + e+)100%
α (α emission)

186Tl

Rhif màs186
neutron number105
relative atomic mass
185.978654787 ± 0.000022276 Da
g-factor
natural abundance
Dadfeilio ymbelydrol☢️ elfen ymbelydrol
Hanner oes
3.5 ± 0.5 s
spin2
nuclear quadrupole moment
dyddiad darganfod1975
parity-

decay modeintensity
β+ (β+ decay; β+ = ϵ + e+)
α (α emission)

187Tl

Rhif màs187
neutron number106
relative atomic mass
186.97590474 ± 0.00000864 Da
g-factor
3.08 ± 0.12
natural abundance
Dadfeilio ymbelydrol☢️ elfen ymbelydrol
Hanner oes
spin1/2
nuclear quadrupole moment
0
dyddiad darganfod1976
parity+

decay modeintensity
β+ (β+ decay; β+ = ϵ + e+)100%
α (α emission)

188Tl

Rhif màs188
neutron number107
relative atomic mass
187.976020886 ± 0.000032103 Da
g-factor
natural abundance
Dadfeilio ymbelydrol☢️ elfen ymbelydrol
Hanner oes
71 ± 2 s
spin2
nuclear quadrupole moment
dyddiad darganfod1970
parity-

decay modeintensity
β+ (β+ decay; β+ = ϵ + e+)100%

189Tl

Rhif màs189
neutron number108
relative atomic mass
188.973573525 ± 0.000008983 Da
g-factor
natural abundance
Dadfeilio ymbelydrol☢️ elfen ymbelydrol
Hanner oes
2.3 ± 0.2 m
spin1/2
nuclear quadrupole moment
0
dyddiad darganfod1972
parity+

decay modeintensity
β+ (β+ decay; β+ = ϵ + e+)100%

190Tl

Rhif màs190
neutron number109
relative atomic mass
189.973841771 ± 0.000007784 Da
g-factor
natural abundance
Dadfeilio ymbelydrol☢️ elfen ymbelydrol
Hanner oes
2.6 ± 0.3 m
spin2
nuclear quadrupole moment
dyddiad darganfod1970
parity-

decay modeintensity
β+ (β+ decay; β+ = ϵ + e+)100%

191Tl

Rhif màs191
neutron number110
relative atomic mass
190.971784093 ± 0.000007889 Da
g-factor
3.164 ± 0.008
natural abundance
Dadfeilio ymbelydrol☢️ elfen ymbelydrol
Hanner oes
spin1/2
nuclear quadrupole moment
0
dyddiad darganfod1974
parity+

decay modeintensity
β+ (β+ decay; β+ = ϵ + e+)

192Tl

Rhif màs192
neutron number111
relative atomic mass
191.972225 ± 0.000034 Da
g-factor
0.0995 ± 0.0015
natural abundance
Dadfeilio ymbelydrol☢️ elfen ymbelydrol
Hanner oes
9.6 ± 0.4 m
spin2
nuclear quadrupole moment
dyddiad darganfod1961
parity-

decay modeintensity
β+ (β+ decay; β+ = ϵ + e+)100%

193Tl

Rhif màs193
neutron number112
relative atomic mass
192.970501994 ± 0.0000072 Da
g-factor
3.17 ± 0.006
natural abundance
Dadfeilio ymbelydrol☢️ elfen ymbelydrol
Hanner oes
21.6 ± 0.8 m
spin1/2
nuclear quadrupole moment
0
dyddiad darganfod1960
parity+

decay modeintensity
β+ (β+ decay; β+ = ϵ + e+)100%

194Tl

Rhif màs194
neutron number113
relative atomic mass
193.971081408 ± 0.000015 Da
g-factor
0.0695 ± 0.0015
natural abundance
Dadfeilio ymbelydrol☢️ elfen ymbelydrol
Hanner oes
33 ± 0.5 m
spin2
nuclear quadrupole moment
-0.282 ± 0.007
dyddiad darganfod1960
parity-

decay modeintensity
β+ (β+ decay; β+ = ϵ + e+)100%
α (α emission)

195Tl

Rhif màs195
neutron number114
relative atomic mass
194.969774052 ± 0.000011944 Da
g-factor
3.14 ± 0.08
natural abundance
Dadfeilio ymbelydrol☢️ elfen ymbelydrol
Hanner oes
1.16 ± 0.05 h
spin1/2
nuclear quadrupole moment
0
dyddiad darganfod1955
parity+

decay modeintensity
β+ (β+ decay; β+ = ϵ + e+)100%

196Tl

Rhif màs196
neutron number115
relative atomic mass
195.970481189 ± 0.000013 Da
g-factor
0.036 ± 0.0015
natural abundance
Dadfeilio ymbelydrol☢️ elfen ymbelydrol
Hanner oes
1.84 ± 0.03 h
spin2
nuclear quadrupole moment
-0.178 ± 0.014
dyddiad darganfod1955
parity-

decay modeintensity
β+ (β+ decay; β+ = ϵ + e+)100%

197Tl

Rhif màs197
neutron number116
relative atomic mass
196.969560492 ± 0.000014573 Da
g-factor
3.14 ± 0.04
natural abundance
Dadfeilio ymbelydrol☢️ elfen ymbelydrol
Hanner oes
2.84 ± 0.04 h
spin1/2
nuclear quadrupole moment
0
dyddiad darganfod1955
parity+

decay modeintensity
β+ (β+ decay; β+ = ϵ + e+)100%

198Tl

Rhif màs198
neutron number117
relative atomic mass
197.970446669 ± 0.0000081 Da
g-factor
0 ± 0.005
natural abundance
Dadfeilio ymbelydrol☢️ elfen ymbelydrol
Hanner oes
5.3 ± 0.5 h
spin2
nuclear quadrupole moment
dyddiad darganfod1949
parity-

decay modeintensity
β+ (β+ decay; β+ = ϵ + e+)100%

199Tl

Rhif màs199
neutron number118
relative atomic mass
198.969877 ± 0.00003 Da
g-factor
3.18 ± 0.04
natural abundance
Dadfeilio ymbelydrol☢️ elfen ymbelydrol
Hanner oes
7.42 ± 0.08 h
spin1/2
nuclear quadrupole moment
0
dyddiad darganfod1949
parity+

decay modeintensity
β+ (β+ decay; β+ = ϵ + e+)100%

200Tl

Rhif màs200
neutron number119
relative atomic mass
199.970963608 ± 0.000006182 Da
g-factor
0.02 ± 0.005
natural abundance
Dadfeilio ymbelydrol☢️ elfen ymbelydrol
Hanner oes
26.1 ± 0.1 h
spin2
nuclear quadrupole moment
dyddiad darganfod1949
parity-

decay modeintensity
β+ (β+ decay; β+ = ϵ + e+)100%

201Tl

Rhif màs201
neutron number120
relative atomic mass
200.970820235 ± 0.000015228 Da
g-factor
3.198 ± 0.006
natural abundance
Dadfeilio ymbelydrol☢️ elfen ymbelydrol
Hanner oes
3.0421 ± 0.0008 d
spin1/2
nuclear quadrupole moment
0
dyddiad darganfod1950
parity+

decay modeintensity
ϵ (electron capture)100%

202Tl

Rhif màs202
neutron number121
relative atomic mass
201.972108874 ± 0.000001972 Da
g-factor
0.03 ± 0.005
natural abundance
Dadfeilio ymbelydrol☢️ elfen ymbelydrol
Hanner oes
12.31 ± 0.08 d
spin2
nuclear quadrupole moment
dyddiad darganfod1940
parity-

decay modeintensity
ϵ (electron capture)100%

203Tl

Rhif màs203
neutron number122
relative atomic mass
202.972344098 ± 0.000001257 Da
g-factor
natural abundance
29.515 ± 0.044
Dadfeilio ymbelydrolstable isotope
Hanner oesNot Radioactive ☢️
spin1/2
nuclear quadrupole moment
0
dyddiad darganfod1931
parity+

204Tl

Rhif màs204
neutron number123
relative atomic mass
203.97386342 ± 0.000001238 Da
g-factor
0.045 ± 0.005
natural abundance
Dadfeilio ymbelydrol☢️ elfen ymbelydrol
Hanner oes
3.783 ± 0.012 y
spin2
nuclear quadrupole moment
dyddiad darganfod1953
parity-

decay modeintensity
β (β decay)97.08%
EC+B+2.92%

205Tl

Rhif màs205
neutron number124
relative atomic mass
204.974427318 ± 0.00000133 Da
g-factor
natural abundance
70.485 ± 0.044
Dadfeilio ymbelydrolstable isotope
Hanner oesNot Radioactive ☢️
spin1/2
nuclear quadrupole moment
0
dyddiad darganfod1931
parity+

206Tl

Rhif màs206
neutron number125
relative atomic mass
205.976110108 ± 0.00000138 Da
g-factor
0
natural abundance
Dadfeilio ymbelydrol☢️ elfen ymbelydrol
Hanner oes
4.202 ± 0.011 m
spin0
nuclear quadrupole moment
0
dyddiad darganfod1935
parity-

decay modeintensity
β (β decay)100%

207Tl

Rhif màs207
neutron number126
relative atomic mass
206.977418605 ± 0.000005839 Da
g-factor
3.738 ± 0.01
natural abundance
Dadfeilio ymbelydrol☢️ elfen ymbelydrol
Hanner oes
4.77 ± 0.02 m
spin1/2
nuclear quadrupole moment
0
dyddiad darganfod1908
parity+

decay modeintensity
β (β decay)100%

208Tl

Rhif màs208
neutron number127
relative atomic mass
207.982018006 ± 0.000001989 Da
g-factor
0.0582 ± 0.0026
natural abundance
Dadfeilio ymbelydrol☢️ elfen ymbelydrol
Hanner oes
3.053 ± 0.004 m
spin5
nuclear quadrupole moment
dyddiad darganfod1909
parity+

decay modeintensity
β (β decay)100%

209Tl

Rhif màs209
neutron number128
relative atomic mass
208.985351713 ± 0.000006559 Da
g-factor
natural abundance
Dadfeilio ymbelydrol☢️ elfen ymbelydrol
Hanner oes
2.162 ± 0.007 m
spin1/2
nuclear quadrupole moment
0
dyddiad darganfod1950
parity+

decay modeintensity
β (β decay)100%
β n (β-delayed neutron emission)

210Tl

Rhif màs210
neutron number129
relative atomic mass
209.990072942 ± 0.000012456 Da
g-factor
natural abundance
Dadfeilio ymbelydrol☢️ elfen ymbelydrol
Hanner oes
1.3 ± 0.03 m
spin5
nuclear quadrupole moment
dyddiad darganfod1909
parity+

decay modeintensity
β (β decay)100%
β n (β-delayed neutron emission)0.009%

211Tl

Rhif màs211
neutron number130
relative atomic mass
210.993475 ± 0.000045 Da
g-factor
natural abundance
Dadfeilio ymbelydrol☢️ elfen ymbelydrol
Hanner oes
81 ± 16 s
spin1/2
nuclear quadrupole moment
0
dyddiad darganfod1998
parity+

decay modeintensity
β (β decay)100%
β n (β-delayed neutron emission)2.2%

212Tl

Rhif màs212
neutron number131
relative atomic mass
211.998335 ± 0.000215 Da
g-factor
natural abundance
Dadfeilio ymbelydrol☢️ elfen ymbelydrol
Hanner oes
31 ± 8 s
spin5
nuclear quadrupole moment
dyddiad darganfod1998
parity+

decay modeintensity
β (β decay)100%
β n (β-delayed neutron emission)1.8%

213Tl

Rhif màs213
neutron number132
relative atomic mass
213.001915 ± 0.000029 Da
g-factor
natural abundance
Dadfeilio ymbelydrol☢️ elfen ymbelydrol
Hanner oes
23.8 ± 4.4 s
spin1/2
nuclear quadrupole moment
0
dyddiad darganfod2010
parity+

decay modeintensity
β (β decay)100%
β n (β-delayed neutron emission)7.6%

214Tl

Rhif màs214
neutron number133
relative atomic mass
214.00694 ± 0.00021 Da
g-factor
natural abundance
Dadfeilio ymbelydrol☢️ elfen ymbelydrol
Hanner oes
11 ± 2.4 s
spin5
nuclear quadrupole moment
dyddiad darganfod2010
parity+

decay modeintensity
β (β decay)100%
β n (β-delayed neutron emission)34%

215Tl

Rhif màs215
neutron number134
relative atomic mass
215.010768 ± 0.000322 Da
g-factor
natural abundance
Dadfeilio ymbelydrol☢️ elfen ymbelydrol
Hanner oes
9.7 ± 3.8 s
spin1/2
nuclear quadrupole moment
0
dyddiad darganfod2010
parity+

decay modeintensity
β (β decay)100%
β n (β-delayed neutron emission)4.6%

216Tl

Rhif màs216
neutron number135
relative atomic mass
216.015964 ± 0.000322 Da
g-factor
natural abundance
Dadfeilio ymbelydrol☢️ elfen ymbelydrol
Hanner oes
5.9 ± 3.3 s
spin5
nuclear quadrupole moment
dyddiad darganfod2010
parity+

decay modeintensity
β (β decay)100%
β n (β-delayed neutron emission)11.5%

217Tl

Rhif màs217
neutron number136
relative atomic mass
217.020032 ± 0.000429 Da
g-factor
natural abundance
Dadfeilio ymbelydrol☢️ elfen ymbelydrol
Hanner oes
spin1/2
nuclear quadrupole moment
0
dyddiad darganfod2010
parity+

decay modeintensity
β (β decay)
β n (β-delayed neutron emission)

218Tl

Rhif màs218
neutron number137
relative atomic mass
218.025454 ± 0.000429 Da
g-factor
natural abundance
Dadfeilio ymbelydrol☢️ elfen ymbelydrol
Hanner oes
spin6
nuclear quadrupole moment
dyddiad darganfod
parity+

decay modeintensity
β (β decay)
β n (β-delayed neutron emission)
Thallium pieces in ampoule
Thallium-croprotated

hanes

darganfyddwr neu ddyfeisiwrSir William Crookes
man darganfodEngland
dyddiad darganfod1861
geirdarddiadGreek: thallos (green twig), for a bright green line in its spectrum.
ynganiadTHAL-i-em (Saesneg)

source

Abundance
Abundance in Earth's crust
0.85 mg/kg
natural abundance (cefnfor)
0.000019 mg/L
natural abundance (corff dynol)
natural abundance (Awyrfaen)
0.0000078 %
natural abundance (Haul)
0.0000001 %
Abundance in Universe
0.00000005 %

Nuclear Screening Constants

1s1.5591
2p4.5138
2s21.3158
3d13.4658
3p22.6335
3s23.5809
4d37.6112
4f38.1324
4p35.7832
4s34.9212
5d58.975
5p53.9115
5s51.878
6p68.7462
6s68.1804