THALLIUM, Tl (81)

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Elemental Tile

Thallium from Hutchinsonite

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OVERVIEW

THALLIUM

Tl (81)

ˈθæliəm

PHONETICS

IDENTIFICATION

Thallium is a soft grey post-transition metal is not found free in nature. When isolated, it resembles tin, but discolours when exposed to the air. Used for flame spectroscopy, in which thallium produces a notable green spectral line. 60–70% of thallium production is used in the electronics industry, and the remainder used in pharmaceutical and glass manufacturing.

ELEMENT BRIEF

1861 by Sir William Crookes, England.

DISCOVERY

Greek 'thallos' meaning 'green twig'.

ETYMOLOGY

Thallium

ELEMENT

Tl

SYMBOL

81

ATOMIC NUMBER

7440-28-0

CAS NUMBER

PHYSICAL

ELEMENTAL SPECTRUM

Silver

ELEMENTAL COLOUR

-

REFRACTIVE INDEX

0.450

POISSON RATIO

17.248 cm³

MOLAR VOLUME

26.40M Pa, 260.547'7 Atm

BRINELL HARDNESS

1.20

MOHS HARDNESS

-

VICKERS HARDNESS

818 m/s, Mach 2.384'8

SPEED OF SOUND

43.00G Pa, 424.377'0k Atm

BULK MODULUS

2.80G Pa, 27.633'9k Atm

SHEAR MODULUS

8.00G Pa, 78.953'9k Atm

YOUNG MODULUS

ALLOTROPES

THERMODYNAMIC

577.15 K, 304.00 °C

MELTING POINT

1,746.15 K, 1,473.00 °C

BOILING POINT

-

AUTOMATIC IGNITION

-

FLASHPOINT

-

CRITICAL TEMPERATURE

-

CRITICAL PRESSURE

8.300'000 W/(m K)

THERMAL CONDUCTIVITY

0.000'029'9 K¯¹

THERMAL EXPANSION

129.00 J/(kg K)

SPECIFIC HEAT

4.200 kJ/mol

HEAT FUSION

165.000 kJ/mol

HEAT VAPORISATION

-

HEAT COMBUSTION

-

CURIE POINT

-

NEEL POINT

-

ADIABATIC INDEX

Solid

PHASE

ELECTROMAGNETIC

Conductor

ELECTRICAL TYPE

6.70M S/m

CONDUCTIVITY

150.00n Ω.m

RESISTIVITY

2.380 K

SUPERCONDUCTING POINT

Diamagnetic

MAGNETIC TYPE

-0.000'000'003'0

MASS SUSCEPTIBILITY

-0.000'000'000'613'00

MOLAR SUSCEPTIBILITY

-0.000'035'600'00

VOLUME SUSCEPTIBILITY

STRUCTURE

Basic Metal

CLASSIFICATION

204.383'332'5

ATOMIC WEIGHT

154 pm

ATOMIC RADIUS

144 pm

COVALENT RADIUS SINGLE BOND

142 pm

COVALENT RADIUS DOUBLE BOND

150 pm

COVALENT RADIUS TRIPLE BOND

196 pm

VAN DER WAALS RADIUS

[Xe]6s²4f¹⁴5d¹⁰6p¹

ELECTRON CONFIGURATION

Hexagonal, Close Packed Single

CRYSTAL STRUCTURE

11.850'00 g/cm³

DENSITY AS SOLID

11.220'00 g/cm³

DENSITY AS LIQUID

-

DENSITY AS GAS

p6₃/mmc

SPACE GROUP NAME

194

SPACE GROUP NUMBER

π/2, π/2 2π/3

LATTICE ANGLES

345.66, 345.66 552.48 pm

LATTICE CONSTANTS

REACTIVITY

3

VALENCE

1.62

ELECTRONEGATIVITY

0.38 kJ/mol

ELECTRON AFFINITY

IONISATION ENERGY

ELEMENTAL DISTRIBUTION

0.000'000'1 %

UNIVERSE

0.000'007'9 %

METEORITES

0.000'000'1 %

SUN

0.000'053 %

EARTH CRUST

0.000'000'000'1 %

OCEANS

0.000'01 %

HUMANS

ISOTOPES

Stable

HALF LIFE

Stable

LIFETIME

6p¹ = 6, 1, -1, +1/2

QUANTUM NUMBERS

9.890'00 b σ_s

NEUTRON CROSS SECTION

3.430'00 b σ_a

NEUTRON MASS ABSORPTION

STABLE ISOTOPES

UNSTABLE ISOTOPES

ISOTOPIC CHAIN

Isotope	Stability	Symbol	Type	Protons		Neutrons		Spin	Parity	Mass		Abundance		Mass Measure	Mass Excess		Binding Energy		Dipole Moment		Quadrupole Moment		Halflife in Years		Halflife in Seconds		A01 Decay Probability		A01 Decay Mode	A01 Decay Energy		A01 Decay Daughter	A01 Decay Link	A02 Decay Mode	A02 Decay Energy		A02 Decay Daughter	A02 Decay Link	Y01 Decay Product Yield		Y01 Decay Product Nuclide	Y02 Decay Product Yield		Y02 Decay Product Nuclide	Y03 Decay Product Yield		Y03 Decay Product Nuclide	Y04 Decay Product Yield		Y04 Decay Product Nuclide	Y05 Decay Product Yield		Y05 Decay Product Nuclide	Y06 Decay Product Yield		Y06 Decay Product Nuclide	Y07 Decay Product Yield		Y07 Decay Product Nuclide	Y08 Decay Product Yield		Y08 Decay Product Nuclide	Y09 Decay Product Yield		Y09 Decay Product Nuclide	Y10 Decay Product Yield		Y10 Decay Product Nuclide	Y11 Decay Product Yield		Y11 Decay Product Nuclide	Y12 Decay Product Yield		Y12 Decay Product Nuclide
Isotope_081_tl_176_u	Unstable	¹⁷⁶Tl	Fermion	81	p	95	n	?	0	176.000'590'000'0	u	~ 0	%	~ 0	0.550'000'000'0	MeV	7.708'000'000'0	MeV	-		-		3.17E-10	year	10.000	milli-seconds ( x⁻³ )	?	%	α	7,407.000	keV	¹⁷²Au	¹⁷⁶Tl > [ ? % , α , 7,407.0 keV ] > ¹⁷²Au						?	%	¹⁷¹Yb	?	%	¹⁵⁹Tb	?	%	¹⁴³Nd	?	%	¹⁵⁵Gd	?	%	¹⁵¹Eu	?	%	¹⁶⁷Er	?	%	¹⁶³Dy	?	%	¹⁶⁰Dy	?	%	¹⁴⁰Ce	?	%	¹⁵²Sm	?	%	¹⁵⁶Gd
Isotope_081_tl_177_u	Unstable	¹⁷⁷Tl	Boson	81	p	96	n	1/2	1	176.996'427'286'0	u	~ 0	%	~ 0	-3.327'962'000'0	MeV	7.732'096'000'0	MeV	-		-		5.70E-10	year	18.000	milli-seconds ( x⁻³ )	73.000'000	%	α	7,066.920	keV	¹⁷³Au	¹⁷⁷Tl > [ 73 % , α , 7,066.92 keV ] > ¹⁷³Au	p	1,162.200	keV	¹⁷⁶Hg	¹⁷⁷Tl > [ , p , 1,162.2 keV ] > ¹⁷⁶Hg	3.325'985	%	¹⁶⁹Tm	0.651'744	%	¹⁷³Yb	0.404'878	%	¹⁶⁵Ho	0.345'960	%	¹⁶⁰Dy	0.000'809	%	¹⁶¹Dy	0.000'023	%	¹⁴⁰Ce	0.000'001	%	¹⁵⁷Gd	0.000'000	%	¹⁵³Eu	0.000'000	%	¹⁴⁵Nd	0.000'000	%	¹⁴¹Pr	?	%	¹⁷²Yb	?	%	¹⁷⁶Hf
Isotope_081_tl_178_u	Unstable	¹⁷⁸Tl	Fermion	81	p	97	n	?	0	177.994'897'000'0	u	~ 0	%	~ 0	-4.754'000'000'0	MeV	7.742'000'000'0	MeV	-		-		8.08E-9	year	255.000	milli-seconds ( x⁻³ )	53.000'000	%	α	7,017.000	keV	¹⁷⁴Au	¹⁷⁸Tl > [ 53 % , α , 7,017.0 keV ] > ¹⁷⁴Au	β+	10,541.000	keV	¹⁷⁷Hg	¹⁷⁸Tl > [ , β+ , 10,541.0 keV ] > ¹⁷⁷Hg	70.477'294	%	¹⁷⁰Yb	7.808'580	%	¹⁷⁸Hf	6.687'792	%	¹⁶⁶Er	0.000'000	%	¹⁴²Nd	?	%	¹⁵⁴Gd	?	%	¹⁷⁴Yb	?	%	¹⁵⁰Sm	?	%	¹⁵⁸Gd	?	%	¹⁶²Dy
Isotope_081_tl_179_u	Unstable	¹⁷⁹Tl	Boson	81	p	98	n	1/2	1	178.991'089'082'0	u	~ 0	%	~ 0	-8.300'467'000'0	MeV	7.763'666'000'0	MeV	-		-		8.56E-9	year	270.000	milli-seconds ( x⁻³ )	70.000'000	%	α	6,717.670	keV	¹⁷⁵Au	¹⁷⁹Tl > [ 70 % , α , 6,717.67 keV ] > ¹⁷⁵Au	β+	7,599.000	keV	¹⁷⁹Hg	¹⁷⁹Tl > [ , β+ , 7,599.0 keV ] > ¹⁷⁹Hg	9.992'832	%	¹⁷¹Yb	0.183'095	%	¹⁶⁷Er	0.041'535	%	¹⁷⁸Hf	0.003'466	%	¹⁷⁰Yb	0.000'073	%	¹⁶³Dy	0.000'000	%	¹⁶⁶Er	0.000'000	%	¹⁵⁹Tb	?	%	¹⁴³Nd	?	%	¹⁷⁵Lu	?	%	¹⁵⁵Gd	?	%	¹⁵¹Eu	?	%	¹⁷⁴Yb
Isotope_081_tl_180_u	Unstable	¹⁸⁰Tl	Fermion	81	p	99	n	?	0	179.989'906'000'0	u	~ 0	%	~ 0	-9.403'000'000'0	MeV	7.771'000'000'0	MeV	-		-		4.75E-8	year	1.500	seconds ( x⁰ )	7.000'000	%	α	6,709.400	keV	¹⁷⁶Au	¹⁸⁰Tl > [ 7 % , α , 6,709.4 keV ] > ¹⁷⁶Au	β+SF	?	keV			5.176'836	%	¹⁷²Yb	1.682'184	%	¹⁷⁶Hf	?	%	¹⁶⁸Er	?	%	¹⁶⁴Dy	?	%	¹⁶⁰Dy
Isotope_081_tl_181_u	Unstable	¹⁸¹Tl	Boson	81	p	100	n	1/2	1	180.986'257'447'0	u	~ 0	%	~ 0	-12.801'105'000'0	MeV	7.791'931'000'0	MeV	-		-		1.01E-7	year	3.200	seconds ( x⁰ )	?	%	α	6,324.180	keV	¹⁷⁷Au	¹⁸¹Tl > [ ? % , α , 6,324.18 keV ] > ¹⁷⁷Au	β+	6,837.900	keV	¹⁸¹Hg	¹⁸¹Tl > [ , β+ , 6,837.9 keV ] > ¹⁸¹Hg	?	%	¹⁷³Yb	?	%	¹⁶⁹Tm	?	%	¹⁶⁵Ho	?	%	¹⁷⁷Hf	?	%	¹⁷⁶Hf	?	%	¹⁸⁰Hf
Isotope_081_tl_182_u	Unstable	¹⁸²Tl	Fermion	81	p	101	n	2	-1	181.985'667'104'0	u	~ 0	%	~ 0	-13.351'007'000'0	MeV	7.796'487'000'0	MeV	-		-		6.34E-8	year	2.000	seconds ( x⁰ )	96.000'000	%	β+	9,202.900	keV	¹⁸²Hg	¹⁸²Tl > [ 96 % , β+ , 9,202.9 keV ] > ¹⁸²Hg	α	6,550.200	keV	¹⁷⁸Au	¹⁸²Tl > [ , α , 6,550.2 keV ] > ¹⁷⁸Au	14.582'127	%	¹⁷⁸Hf	2.805'567	%	¹⁷⁰Yb	0.000'088	%	¹⁶⁶Er	0.000'010	%	¹⁸¹Ta	0.000'000	%	¹⁷⁷Hf	?	%	¹⁷⁴Yb
Isotope_081_tl_183_u	Unstable	¹⁸³Tl	Boson	81	p	102	n	1/2	1	182.982'192'802'0	u	~ 0	%	~ 0	-16.587'297'000'0	MeV	7.815'674'000'0	MeV	-		-		2.19E-7	year	6.900	seconds ( x⁰ )	98.000'000	%	β+	6,190.300	keV	¹⁸³Hg	¹⁸³Tl > [ 98 % , β+ , 6,190.3 keV ] > ¹⁸³Hg	α	5,939.900	keV	¹⁷⁹Au	¹⁸³Tl > [ , α , 5,939.9 keV ] > ¹⁷⁹Au	13.553'511	%	¹⁷⁹Hf	0.467'522	%	¹⁷⁵Lu	0.003'740	%	¹⁷¹Yb	0.000'000	%	¹⁷⁸Hf
Isotope_081_tl_184_u	Unstable	¹⁸⁴Tl	Fermion	81	p	103	n	2	-1	183.981'873'122'0	u	~ 0	%	~ 0	-16.885'078'000'0	MeV	7.818'681'000'0	MeV	-		-		3.07E-7	year	9.700	seconds ( x⁰ )	97.900'000	%	β+	8,441.800	keV	¹⁸⁴Hg	¹⁸⁴Tl > [ 97.9 % , β+ , 8,441.8 keV ] > ¹⁸⁴Hg	α	6,286.400	keV	¹⁸⁰Au	¹⁸⁴Tl > [ , α , 6,286.4 keV ] > ¹⁸⁰Au	0.046'075	%	¹⁷⁶Hf	0.001'172	%	¹⁷²Yb	?	%	¹⁸⁰Hf
Isotope_081_tl_185_u	Unstable	¹⁸⁵Tl	Boson	81	p	104	n	1/2	1	184.978'791'305'0	u	~ 0	%	~ 0	-19.755'772'000'0	MeV	7.835'564'000'0	MeV	-		-		6.18E-7	year	19.500	seconds ( x⁰ )	?	%	β+	5,397.900	keV	¹⁸⁵Hg	¹⁸⁵Tl > [ ? % , β+ , 5,397.9 keV ] > ¹⁸⁵Hg	α	5,690.500	keV	¹⁸¹Au	¹⁸⁵Tl > [ , α , 5,690.5 keV ] > ¹⁸¹Au	?	%	¹⁷³Yb	?	%	¹⁸¹Ta	?	%	¹⁸⁵Re	?	%	¹⁷⁷Hf
Isotope_081_tl_186_u	Unstable	¹⁸⁶Tl	Fermion	81	p	105	n	2	-1	185.978'325'000'0	u	~ 0	%	~ 0	-20.190'133'000'0	MeV	7.839'167'000'0	MeV	-		-		1.27E-6	year	40.020	seconds ( x⁰ )	?	%	β+	7,327.000	keV	¹⁸⁶Hg	¹⁸⁶Tl > [ ? % , β+ , 7,327.0 keV ] > ¹⁸⁶Hg						?	%	¹⁷⁸Hf
Isotope_081_tl_187_u	Unstable	¹⁸⁷Tl	Boson	81	p	106	n	1/2	1	186.975'905'897'0	u	~ 0	%	~ 0	-22.443'512'000'0	MeV	7.852'458'000'0	MeV	-		-		1.62E-6	year	51.000	seconds ( x⁰ )	100.000'000	%	β+	4,652.100	keV	¹⁸⁷Hg	¹⁸⁷Tl > [ 100 % , β+ , 4,652.1 keV ] > ¹⁸⁷Hg	α	5,318.470	keV	¹⁸³Au	¹⁸⁷Tl > [ , α , 5,318.47 keV ] > ¹⁸³Au	100.000'000	%	¹⁸⁷Os	0.000'002	%	¹⁷⁹Hf
Isotope_081_tl_188_u	Unstable	¹⁸⁸Tl	Fermion	81	p	107	n	2	-1	187.976'009'782'0	u	~ 0	%	~ 0	-22.346'744'000'0	MeV	7.853'108'000'0	MeV	-		-		2.24E-6	year	70.800	seconds ( x⁰ )	100.000'000	%	β+	6,832.800	keV	¹⁸⁸Hg	¹⁸⁸Tl > [ 100 % , β+ , 6,832.8 keV ] > ¹⁸⁸Hg						100.000'000	%	¹⁸⁸Os	?	%	¹⁸⁰Hf	?	%	¹⁶⁷Hf
Isotope_081_tl_189_u	Unstable	¹⁸⁹Tl	Boson	81	p	108	n	1/2	1	188.973'588'428'0	u	~ 0	%	~ 0	-24.602'221'000'0	MeV	7.866'196'000'0	MeV	-		-		4.44E-6	year	139.980	seconds ( x⁰ )	100.000'000	%	β+	4,006.400	keV	¹⁸⁹Hg	¹⁸⁹Tl > [ 100 % , β+ , 4,006.4 keV ] > ¹⁸⁹Hg						100.000'000	%	¹⁸⁹Os	0.000'060	%	¹⁸⁵Re	0.000'000	%	¹⁸¹Ta
Isotope_081_tl_190_u	Unstable	¹⁹⁰Tl	Fermion	81	p	109	n	2	-1	189.973'877'149'0	u	~ 0	%	~ 0	-24.333'279'000'0	MeV	7.865'860'000'0	MeV	0.250'000'000'0	nm	-		5.07E-6	year	160.020	seconds ( x⁰ )	100.000'000	%	β+	6,015.000	keV	¹⁹⁰Hg	¹⁹⁰Tl > [ 100 % , β+ , 6,015.0 keV ] > ¹⁹⁰Hg						?	%	¹⁹⁰Os	?	%	¹⁷⁸Hf
Isotope_081_tl_191_u	Unstable	¹⁹¹Tl	Boson	81	p	110	n	1/2	1	190.971'786'154'0	u	~ 0	%	~ 0	-26.281'028'000'0	MeV	7.877'134'000'0	MeV	1.588'000'000'0	nm	-		3.80E-5	year	1.200	kilo-seconds ( x³ )	?	%	β+	3,289.700	keV	¹⁹¹Hg	¹⁹¹Tl > [ ? % , β+ , 3,289.7 keV ] > ¹⁹¹Hg						?	%	¹⁸⁷Os	?	%	¹⁹¹Ir
Isotope_081_tl_192_u	Unstable	¹⁹²Tl	Fermion	81	p	111	n	2	-1	191.972'225'000'0	u	~ 0	%	~ 0	-25.872'246'000'0	MeV	7.876'016'000'0	MeV	0.200'000'000'0	nm	-0.337'000'000'0	b	1.84E-5	year	580.020	seconds ( x⁰ )	100.000'000	%	β+	5,117.000	keV	¹⁹²Hg	¹⁹²Tl > [ 100 % , β+ , 5,117.0 keV ] > ¹⁹²Hg						100.000'000	%	¹⁹²Pt	0.000'004	%	¹⁸⁸Os	?	%	¹⁸⁰Hf	?	%	¹⁷⁶Hf
Isotope_081_tl_193_u	Unstable	¹⁹³Tl	Boson	81	p	112	n	1/2	1	192.970'672'000'0	u	~ 0	%	~ 0	-27.318'856'000'0	MeV	7.884'523'000'0	MeV	1.591'200'000'0	nm	-		4.13E-5	year	1.302	kilo-seconds ( x³ )	100.000'000	%	β+	2,710.000	keV	¹⁹³Hg	¹⁹³Tl > [ 100 % , β+ , 2,710.0 keV ] > ¹⁹³Hg						100.000'000	%	¹⁹³Ir	0.000'010	%	¹⁸⁹Os
Isotope_081_tl_194_u	Unstable	¹⁹⁴Tl	Fermion	81	p	113	n	2	-1	193.971'200'000'0	u	~ 0	%	~ 0	-26.827'027'000'0	MeV	7.882'951'000'0	MeV	0.140'000'000'0	nm	-		6.34E-5	year	2.002	kilo-seconds ( x³ )	100.000'000	%	β+	4,344.000	keV	¹⁹⁴Hg	¹⁹⁴Tl > [ 100 % , β+ , 4,344.0 keV ] > ¹⁹⁴Hg	α	3,629.000	keV	¹⁹⁰Au	¹⁹⁴Tl > [ , α , 3,629.0 keV ] > ¹⁹⁰Au	100.000'000	%	¹⁹⁴Pt	?	%	¹⁹⁰Os	?	%	¹⁷⁸Hf
Isotope_081_tl_195_u	Unstable	¹⁹⁵Tl	Boson	81	p	114	n	1/2	1	194.969'774'335'0	u	~ 0	%	~ 0	-28.155'026'000'0	MeV	7.890'727'000'0	MeV	1.580'000'000'0	nm	-		1.32E-4	year	4.180	kilo-seconds ( x³ )	100.000'000	%	β+	1,822.800	keV	¹⁹⁵Hg	¹⁹⁵Tl > [ 100 % , β+ , 1,822.8 keV ] > ¹⁹⁵Hg						100.000'000	%	¹⁹⁵Pt
Isotope_081_tl_196_u	Unstable	¹⁹⁶Tl	Fermion	81	p	115	n	2	-1	195.970'481'151'0	u	~ 0	%	~ 0	-27.496'631'000'0	MeV	7.888'289'000'0	MeV	0.070'000'000'0	nm	-		2.10E-4	year	6.620	kilo-seconds ( x³ )	100.000'000	%	β+	3,307.900	keV	¹⁹⁶Hg	¹⁹⁶Tl > [ 100 % , β+ , 3,307.9 keV ] > ¹⁹⁶Hg						?	%	¹⁹⁶Pt
Isotope_081_tl_197_u	Unstable	¹⁹⁷Tl	Boson	81	p	116	n	1/2	1	196.969'574'511'0	u	~ 0	%	~ 0	-28.341'160'000'0	MeV	7.893'505'000'0	MeV	1.580'000'000'0	nm	-		3.23E-4	year	10.199	kilo-seconds ( x³ )	100.000'000	%	β+	1,177.600	keV	¹⁹⁷Hg	¹⁹⁷Tl > [ 100 % , β+ , 1,177.6 keV ] > ¹⁹⁷Hg						100.000'000	%	¹⁹⁷Au
Isotope_081_tl_198_u	Unstable	¹⁹⁸Tl	Fermion	81	p	117	n	2	-1	197.970'483'495'0	u	~ 0	%	~ 0	-27.494'447'000'0	MeV	7.890'127'000'0	MeV	-		-		6.02E-4	year	19.008	kilo-seconds ( x³ )	100.000'000	%	β+	2,437.800	keV	¹⁹⁸Hg	¹⁹⁸Tl > [ 100 % , β+ , 2,437.8 keV ] > ¹⁹⁸Hg						100.000'000	%	¹⁹⁸Hg
Isotope_081_tl_199_u	Unstable	¹⁹⁹Tl	Boson	81	p	118	n	1/2	1	198.969'877'000'0	u	~ 0	%	~ 0	-28.059'394'000'0	MeV	7.893'876'000'0	MeV	1.600'000'000'0	nm	-		8.46E-4	year	26.701	kilo-seconds ( x³ )	100.000'000	%	β+	465.500	keV	¹⁹⁹Hg	¹⁹⁹Tl > [ 100 % , β+ , 465.5 keV ] > ¹⁹⁹Hg						100.000'000	%	¹⁹⁹Hg
Isotope_081_tl_200_u	Unstable	²⁰⁰Tl	Fermion	81	p	119	n	2	-1	199.970'962'672'0	u	~ 0	%	~ 0	-27.048'096'000'0	MeV	7.889'707'000'0	MeV	20.040'000'000'0	nm	-		2.98E-3	year	94.176	kilo-seconds ( x³ )	100.000'000	%	β+	1,433.840	keV	²⁰⁰Hg	²⁰⁰Tl > [ 100 % , β+ , 1,433.84 keV ] > ²⁰⁰Hg						100.000'000	%	²⁰⁰Hg
Isotope_081_tl_201_u	Unstable	²⁰¹Tl	Boson	81	p	120	n	1/2	1	200.970'818'891'0	u	~ 0	%	~ 0	-27.182'028'000'0	MeV	7.891'277'000'0	MeV	1.605'100'000'0	nm	-		8.32E-3	year	262.480	kilo-seconds ( x³ )	100.000'000	%	ϵ	481.200	keV	²⁰¹Hg	²⁰¹Tl > [ 100 % , ϵ , 481.2 keV ] > ²⁰¹Hg						100.000'000	%	²⁰¹Hg
Isotope_081_tl_202_u	Unstable	²⁰²Tl	Fermion	81	p	121	n	2	-1	201.972'105'808'0	u	~ 0	%	~ 0	-25.983'272'000'0	MeV	7.886'234'000'0	MeV	0.060'000'000'0	nm	-		3.35E-2	year	1.057	mega-seconds ( x⁶ )	100.000'000	%	β+	340.400	keV	²⁰²Hg	²⁰²Tl > [ 100 % , β+ , 340.4 keV ] > ²⁰²Hg						100.000'000	%	²⁰²Hg
Isotope_081_tl_203_s	Stable	²⁰³Tl	Boson	81	p	122	n	1/2	1	202.972'344'220'0	u	29.524'000	%	59.925'554'907'5	-25.761'192'000'0	MeV	7.886'052'000'0	MeV	1.622'257'870'0	nm	-		-
Isotope_081_tl_204_u	Unstable	²⁰⁴Tl	Fermion	81	p	123	n	2	-1	203.973'863'522'0	u	~ 0	%	~ 0	-24.345'972'000'0	MeV	7.880'022'000'0	MeV	0.090'000'000'0	nm	-		3.77E+0	years	119.067	mega-seconds ( x⁶ )	97.100'000	%	β-	763.762	keV	²⁰⁴Pb	²⁰⁴Tl > [ 97.1 % , β- , 763.762 keV ] > ²⁰⁴Pb	ϵ	344.270	keV	²⁰⁴Hg	²⁰⁴Tl > [ , ϵ , 344.27 keV ] > ²⁰⁴Hg	?	%	²⁰⁰Hg
Isotope_081_tl_205_s	Stable	²⁰⁵Tl	Boson	81	p	124	n	1/2	1	204.974'427'541'0	u	70.476'000	%	144.457'777'553'8	-23.820'592'000'0	MeV	7.878'393'000'0	MeV	1.638'214'610'0	nm	-		-
Isotope_081_tl_206_u	Unstable	²⁰⁶Tl	Fermion	81	p	125	n	0	-1	205.976'110'320'0	u	~ 0	%	~ 0	-22.253'094'000'0	MeV	7.871'720'000'0	MeV	-		-		7.92E-6	year	250.020	seconds ( x⁰ )	100.000'000	%	β-	1,532.346	keV	²⁰⁶Pb	²⁰⁶Tl > [ 100 % , β- , 1,532.346 keV ] > ²⁰⁶Pb						100.000'000	%	²⁰⁶Pb
Isotope_081_tl_207_u	Unstable	²⁰⁷Tl	Boson	81	p	126	n	1/2	1	206.977'419'429'0	u	~ 0	%	~ 0	-21.033'666'000'0	MeV	7.866'793'000'0	MeV	1.876'000'000'0	nm	-		9.06E-6	year	286.020	seconds ( x⁰ )	100.000'000	%	β-	1,418.240	keV	²⁰⁷Pb	²⁰⁷Tl > [ 100 % , β- , 1,418.24 keV ] > ²⁰⁷Pb						100.000'000	%	²⁰⁷Pb
Isotope_081_tl_208_u	Unstable	²⁰⁸Tl	Fermion	81	p	127	n	5	1	207.982'018'700'0	u	~ 0	%	~ 0	-16.749'473'000'0	MeV	7.847'180'000'0	MeV	-		-		5.81E-6	year	183.198	seconds ( x⁰ )	100.000'000	%	β-	4,998.980	keV	²⁰⁸Pb	²⁰⁸Tl > [ 100 % , β- , 4,998.98 keV ] > ²⁰⁸Pb						100.000'000	%	²⁰⁸Pb
Isotope_081_tl_209_u	Unstable	²⁰⁹Tl	Boson	81	p	128	n	1/2	1	208.985'358'952'0	u	~ 0	%	~ 0	-13.638'048'000'0	MeV	7.833'365'000'0	MeV	-		-		4.11E-6	year	129.702	seconds ( x⁰ )	100.000'000	%	β-	3,976.390	keV	²⁰⁹Pb	²⁰⁹Tl > [ 100 % , β- , 3,976.39 keV ] > ²⁰⁹Pb						100.000'000	%	²⁰⁵Tl
Isotope_081_tl_210_u	Unstable	²¹⁰Tl	Fermion	81	p	129	n	5	1	209.990'073'689'0	u	~ 0	%	~ 0	-9.246'298'000'0	MeV	7.813'585'000'0	MeV	-		-		2.47E-6	year	78.000	seconds ( x⁰ )	100.000'000	%	β-	5,482.000	keV	²¹⁰Pb	²¹⁰Tl > [ 100 % , β- , 5,482.0 keV ] > ²¹⁰Pb	β-n	296.800	keV	²⁰⁹Pb	²¹⁰Tl > [ , β-n , 296.8 keV ] > ²⁰⁹Pb	100.000'134	%	²⁰⁶Pb	0.009'000	%	²⁰⁵Tl
Isotope_081_tl_211_u	Unstable	²¹¹Tl	Boson	81	p	130	n	1/2	1	210.993'477'000'0	u	~ 0	%	~ 0	-6.076'000'000'0	MeV	7.800'000'000'0	MeV	-		-		1.90E-6	year	60.000	seconds ( x⁰ )	?	%	β-	4,415.000	keV	²¹¹Pb	²¹¹Tl > [ ? % , β- , 4,415.0 keV ] > ²¹¹Pb						?	%	²⁰⁷Pb
Isotope_081_tl_212_u	Unstable	²¹²Tl	Fermion	81	p	131	n	5	1	211.998'228'000'0	u	~ 0	%	~ 0	-1.651'000'000'0	MeV	7.780'000'000'0	MeV	-		-		9.51E-7	year	30.000	seconds ( x⁰ )	?	%	β-	5,896.000	keV	²¹²Pb	²¹²Tl > [ ? % , β- , 5,896.0 keV ] > ²¹²Pb						?	%	²⁰⁸Pb

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