Isotope

Isotopic Mass

amu

% Abundance

T_1/2

T_1/2

Units

Mass Excess

KeV

Binding Energy

Per Nucleon

KeV

Decay

Mode

Branching

Ratio

¹⁷⁶Tl

176.00059 (21)

10

ms

550 (200)

7,708 (1)

A ?

¹⁷⁷Tl

176.996427 (27)

18

ms

-3,328 (25)

7,732.1 (1.4)

A

73 13

¹⁷⁸Tl

177.99490 (12)

255

ms

-4,750 (110)

7,742 (1)

A

?

¹⁷⁹Tl

178.991089 (46)

270

ms

-8,300 (43)

7,763.7 (2.4)

A

?

¹⁸⁰Tl

179.98991 (12)

1.5

s

-9,400 (120)

7,771 (1)

B+ ?

¹⁸¹Tl

180.986257 (10)

3.2

s

-12,801.1 (9.4)

7,791.93 (5.2)

A

?

¹⁸²Tl

181.985667 (82)

2

s

-13,351 (76)

7,796.5 (4.2)

B+>96

¹⁸³Tl

182.982193 (10)

6.9

s

-16,587.3 (9.7)

7,815.67 (5.3)

B+

?

¹⁸⁴Tl

183.981873 (53)

9.7

s

-16,885 (49)

7,818.7 (2.7)

B+

97.9 7

¹⁸⁵Tl

184.978791 (58)

19.5

s

-19,756 (54)

7,835.6 (2.9)

B+

?

¹⁸⁶Tl

185.97833 (20)

40

s

-20,190 (180)

7,839.2 (9.9)

B+ ?

¹⁸⁷Tl

186.9759059 (87)

~51

s

-22,443.5 (8.1)

7,852.46 (4.3)

B+<100

¹⁸⁸Tl

187.976010 (35)

71

s

-22,347 (33)

7,853.1 (1.7)

B+

100

¹⁸⁹Tl

188.973588 (12)

2.3

m

-24,602 (11)

7,866.20 (5.8)

B+

100

¹⁹⁰Tl

189.973877 (53)

2.6

m

-24,333 (49)

7,865.9 (2.6)

B+

100

¹⁹¹Tl

190.9717862 (81)

20

m

-26,281.0 (7.6)

7,877.13 (4)

B+ ?

¹⁹²Tl

191.972225 (34)

9.6

m

-25,872 (32)

7,876.0 (1.6)

B+

100

¹⁹³Tl

192.97067 (12)

21.6

m

-27,320 (110)

7,884.5 (5.7)

B+

100

¹⁹⁴Tl

193.97120 (15)

33

m

-26,830 (140)

7,883.0 (7)

B+

100

¹⁹⁵Tl

194.969774 (15)

1.16

h

-28,155 (14)

7,890.73 (7.1)

B+

¹⁹⁶Tl

195.970481 (13)

1.84

h

-27,497 (12)

7,888.29 (6.2)

B+

100

¹⁹⁷Tl

196.969575 (18)

2.84

h

-28,341 (16)

7,893.51 (8.3)

B+

100

¹⁹⁸Tl

197.970483 (86)

5.3

h

-27,494 (80)

7,890.1 (4)

B+

100

¹⁹⁹Tl

198.969877 (30)

7.42

h

-28,059 (28)

7,893.9 (1.4)

B+

100

²⁰⁰Tl

199.9709627 (62)

26.1

h

-27,048.1 (5.7)

7,889.71 (2.9)

B+

100

²⁰¹Tl

200.970819 (16)

72.912

h

-27,182 (15)

7,891.28 (7.5)

EC

100

²⁰²Tl

201.972106 (16)

12.23

d

-25,983 (15)

7,886.23 (7.3)

B+

100

²⁰³Tl

202.9723442 (14)

29.524 (14)

stable

-25,761.2 (1.3)

7,886.052 (6)

²⁰⁴Tl

203.9738635 (13)

3.78

y

-24,346.0 (1.3)

7,880.022 (6)

B-

97.10 12

²⁰⁵Tl

204.9744275 (14)

70.476 (14)

stable

-23,820.6 (1.3)

7,878.393 (6)

²⁰⁶Tl

205.9761103 (15)

4.2

m

-22,253.1 (1.4)

7,871.720 (7)

B-

100

²⁰⁷Tl

206.9774194 (59)

4.77

m

-21,033.7 (5.5)

7,866.79 (2.7)

B-

100

²⁰⁸Tl

207.9820187 (21)

3.053

m

-16,749.5 (2)

7,847.18 (1)

B-

100

²⁰⁹Tl

208.9853590 (85)

2.161

m

-13,638.0 (7.9)

7,833.37 (3.8)

B-

100

²¹⁰Tl

209.990074 (12)

1.3

m

-9,246 (12)

7,813.59 (5.5)

B-

100

²¹¹Tl

210.99348 (22)

1

m

-6,080 (200)

7,800 (1)

B- ?

²¹²Tl

211.99823 (32)

30

s

-1,650 (300)

7,780 (1)

B- ?

^177mTl

176.996427 (27)

230

us

-3,328 (25)

7,732.1 (1.4)

p

51 8

^179mTl

178.991089 (46)

1.6

ms

-8,300 (43)

7,763.7 (2.4)

A~100

^181mTl

180.986257 (10)

1.7

ms

-12,801.1 (9.4)

7,791.93 (5.2)

B+ ?

^182mTl

181.985667 (82)

2.9

s

-13,351 (76)

7,796.5 (4.2)

A~100

^183mTl

182.982193 (10)

60

ms

-16,587.3 (9.7)

7,815.67 (5.3)

A~1.5

^184mTl

183.981873 (53)

10

s

-16,885 (49)

7,818.7 (2.7)

B+ ?

^185mTl

184.978791 (58)

1.83

s

-19,756 (54)

7,835.6 (2.9)

IT~100

^186mTl

185.97833 (20)

27.5

s

-20,190 (180)

7,839.2 (9.9)

B+~100

^187mTl

186.9759059 (87)

15.6

s

-22,443.5 (8.1)

7,852.46 (4.3)

IT

?

^188mTl

187.976010 (35)

71

s

-22,347 (33)

7,853.1 (1.7)

B+

100

^189mTl

188.973588 (12)

1.4

m

-24,602 (11)

7,866.20 (5.8)

B+~100

^190mTl

189.973877 (53)

3.7

m

-24,333 (49)

7,865.9 (2.6)

B+

100

^191mTl

190.9717862 (81)

5.22

m

-26,281.0 (7.6)

7,877.13 (4)

B+

100

^192mTl

191.972225 (34)

10.8

m

-25,872 (32)

7,876.0 (1.6)

B+

100

^193mTl

192.97067 (12)

2.11

m

-27,320 (110)

7,884.5 (5.7)

IT

75

^194mTl

193.97120 (15)

32.8

m

-26,830 (140)

7,883.0 (7)

B+

100

^195mTl

194.969774 (15)

3.6

s

-28,155 (14)

7,890.73 (7.1)

IT

100

^196mTl

195.970481 (13)

1.41

h

-27,497 (12)

7,888.29 (6.2)

B+

95.5

^197mTl

196.969575 (18)

540

ms

-28,341 (16)

7,893.51 (8.3)

IT

100

^198mTl

197.970483 (86)

1.87

h

-27,494 (80)

7,890.1 (4)

B+

54 2

^199mTl

198.969877 (30)

28.4

ms

-28,059 (28)

7,893.9 (1.4)

IT

100

^200mTl

199.9709627 (62)

34.3

ms

-27,048.1 (5.7)

7,889.71 (2.9)

IT

100

^201mTl

200.970819 (16)

2.035

ms

-27,182 (15)

7,891.28 (7.5)

IT

100

^202mTl

201.972106 (16)

572

us

-25,983 (15)

7,886.23 (7.3)

0

^203mTl

202.9723442 (14)

7.7

us

-25,761.2 (1.3)

7,886.052 (6)

IT

100

^204mTl

203.9738635 (13)

63

us

-24,346.0 (1.3)

7,880.022 (6)

IT

100

^205mTl

204.9744275 (14)

2.6

us

-23,820.6 (1.3)

7,878.393 (6)

IT

100

^206mTl

205.9761103 (15)

3.74

m

-22,253.1 (1.4)

7,871.720 (7)

IT

100

^207mTl

206.9774194 (59)

1.33

s

-21,033.7 (5.5)

7,866.79 (2.7)

IT~100

^183m1Tl

182.982193 (10)

1.48

us

-16,587.3 (9.7)

7,815.67 (5.3)

IT

100

^184m1Tl

183.981873 (53)

>20

ns

-16,885 (49)

7,818.7 (2.7)

IT ?

^185m1Tl

184.978791 (58)

8.3

ns

-19,756 (54)

7,835.6 (2.9)

0

^186m1Tl

185.97833 (20)

2.9

s

-20,190 (180)

7,839.2 (9.9)

IT

100

^188m1Tl

187.976010 (35)

41

ms

-22,347 (33)

7,853.1 (1.7)

IT~100

^190m1Tl

189.973877 (53)

750

us

-24,333 (49)

7,865.9 (2.6)

IT

100

^198m1Tl

197.970483 (86)

32.1

ms

-27,494 (80)

7,890.1 (4)

IT

100

^204m1Tl

203.9738635 (13)

2.6

us

-24,346.0 (1.3)

7,880.022 (6)

IT

100

^182m1Tl

181.985667 (82)

-13,351 (76)

7,796.5 (4.2)

0

^190m2Tl

189.973877 (53)

>1

us

-24,333 (49)

7,865.9 (2.6)

IT ?

^192m1Tl

191.972225 (34)

-25,872 (32)

7,876.0 (1.6)

0

^204m1Tl

203.9738635 (13)

1.6

us

-24,346.0 (1.3)

7,880.022 (6)

IT

100