Isotope

Isotopic Mass

amu

% Abundance

T_1/2

T_1/2

Units

Mass Excess

KeV

Binding Energy

Per Nucleon

KeV

Decay

Mode

Branching

Ratio

¹⁹⁵Rn

195.005438 (55)

6

ms

5,065 (51)

7,700.3 (2.6)

A

?

¹⁹⁶Rn

196.002115 (16)

4.7

ms

1,970 (15)

7,717.99 (7.7)

A~100

¹⁹⁷Rn

197.001584 (65)

66

ms

1,476 (61)

7,722.3 (3.1)

A~100

¹⁹⁸Rn

197.998679 (14)

65

ms

-1,231 (13)

7,737.73 (6.6)

A

?

¹⁹⁹Rn

198.998370 (68)

620

ms

-1,518 (64)

7,740.8 (3.2)

A

?

²⁰⁰Rn

199.995699 (14)

1.03

s

-4,006 (13)

7,754.94 (6.6)

A

?

²⁰¹Rn

200.995628 (76)

7

s

-4,072 (71)

7,756.8 (3.5)

A

?

²⁰²Rn

201.993263 (19)

9.94

s

-6,275 (18)

7,769.30 (8.7)

A

?

²⁰³Rn

202.993387 (25)

43.5

s

-6,160 (24)

7,770.2 (1.2)

A

66 9

²⁰⁴Rn

203.991429 (16)

1.24

m

-7,984 (15)

7,780.64 (7.1)

A

73 1

²⁰⁵Rn

204.991719 (54)

2.8

m

-7,714 (50)

7,780.7 (2.5)

B+

77 4

²⁰⁶Rn

205.990214 (16)

5.67

m

-9,116 (15)

7,788.96 (7.2)

A

62 3

²⁰⁷Rn

206.990734 (28)

9.25

m

-8,631 (26)

7,788.0 (1.3)

B+

79 3

²⁰⁸Rn

207.989642 (12)

24.35

m

-9,648 (11)

7,794.23 (5.4)

A

62 7

²⁰⁹Rn

208.990415 (21)

28.5

m

-8,929 (20)

7,792.12 (9.6)

B+

83 2

²¹⁰Rn

209.9896962 (92)

2.4

h

-9,597.9 (8.6)

7,796.63 (4.1)

A

96 1

²¹¹Rn

210.9906005 (73)

14.6

h

-8,755.6 (6.8)

7,793.94 (3.2)

B+

72.6 17

²¹²Rn

211.9907035 (34)

23.9

m

-8,659.6 (3.2)

7,794.80 (1.5)

A

100

²¹³Rn

212.9938827 (61)

19.5

ms

-5,698.3 (5.7)

7,782.19 (2.7)

A

100

²¹⁴Rn

213.9953626 (99)

270

ns

-4,319.8 (9.2)

7,777.10 (4.3)

A

²¹⁵Rn

214.9987455 (83)

2.3

us

-1,168.6 (7.7)

7,763.81 (3.6)

A

100

²¹⁶Rn

216.0002744 (78)

45

us

255.6 (7.3)

7,758.64 (3.4)

A

100

²¹⁷Rn

217.0039277 (45)

540

us

3,658.6 (4.2)

7,744.40 (1.9)

A

100

²¹⁸Rn

218.0056013 (25)

35

ms

5,217.5 (2.4)

7,738.75 (1.1)

A

100

²¹⁹Rn

219.0094802 (27)

3.96

s

8,830.8 (2.5)

7,723.77 (1.2)

A

100

²²⁰Rn

220.0113940 (24)

55.6

s

10,613.4 (2.2)

7,717.25 (1)

A

100

²²¹Rn

221.0155368 (63)

25

m

14,472.4 (5.9)

7,701.39 (2.7)

B-

78 1

²²²Rn

222.0175777 (25)

3.8235

d

16,373.6 (2.4)

7,694.49 (1.1)

A

100

²²³Rn

223.02179 (32)

24.3

m

20,300 (300)

7,679 (1)

B-

100

²²⁴Rn

224.02409 (32)

107

m

22,440 (300)

7,671 (1)

B-

100

²²⁵Rn

225.02844 (32)

4.66

m

26,490 (300)

7,655 (1)

B-

100

²²⁶Rn

226.03089 (43)

7.4

m

28,770 (400)

7,646 (2)

B-

100

²²⁷Rn

227.03541 (45)

20.8

s

32,980 (420)

7,630 (2)

B-

100

²²⁸Rn

228.03799 (44)

65

s

35,380 (410)

7,621 (2)

B-

100

^195mRn

195.005438 (55)

6

ms

5,065 (51)

7,700.3 (2.6)

A

?

^197mRn

197.001584 (65)

21

ms

1,476 (61)

7,722.3 (3.1)

A~100

^198mRn

197.998679 (14)

50

ms

-1,231 (13)

7,737.73 (6.6)

A

?

^199mRn

198.998370 (68)

320

ms

-1,518 (64)

7,740.8 (3.2)

A

?

^201mRn

200.995628 (76)

3.8

s

-4,072 (71)

7,756.8 (3.5)

A

?

^203mRn

202.993387 (25)

26.7

s

-6,160 (24)

7,770.2 (1.2)

A

?

^207mRn

206.990734 (28)

181

us

-8,631 (26)

7,788.0 (1.3)

IT

100

^209mRn

208.990415 (21)

13.4

us

-8,929 (20)

7,792.12 (9.6)

0

^210mRn

209.9896962 (92)

644

ns

-9,597.9 (8.6)

7,796.63 (4.1)

IT ?

^214mRn

213.9953626 (99)

6.5

ns

-4,319.8 (9.2)

7,777.10 (4.3)

0

^210m1Rn

209.9896962 (92)

1.06

us

-9,597.9 (8.6)

7,796.63 (4.1)

IT

100

^210m2Rn

209.9896962 (92)

1.04

us

-9,597.9 (8.6)

7,796.63 (4.1)

IT

100