Isotope

Isotopic Mass

amu

% Abundance

T_1/2

T_1/2

Units

Mass Excess

KeV

Binding Energy

Per Nucleon

KeV

Decay

Mode

Branching

Ratio

²⁵⁵Db

255.10740 (45)

1.7

s

100,040 (420)

7,357 (2)

A ?

²⁵⁶Db

256.10813 (31)

1.9

s

100,720 (290)

7,357 (1)

A

?

²⁵⁷Db

257.10772 (24)

1.53

s

100,340 (220)

7,361 (1)

A>94

²⁵⁸Db

258.10923 (37)

4.5

s

101,750 (340)

7,359 (1)

A

64 7

²⁵⁹Db

259.10961 (23)

510

ms

102,100 (210)

7,360 (1)

A

100

²⁶⁰Db

260.11130 (25)

1.52

s

103,680 (230)

7,357 (1)

A GE 90.4 6

²⁶¹Db

261.11206 (25)

1.8

s

104,380 (230)

7,357 (1)

A>82

²⁶²Db

262.11408 (20)

35

s

106,270 (180)

7,352 (1)

A~67

²⁶³Db

263.11499 (18)

29

s

107,110 (170)

7,352 (1)

SF

56 14

²⁶⁴Db

264.11740 (25)

3

m

109,360 (230)

7,346 (1)

A ?

²⁶⁵Db

265.11860 (30)

15

m

110,480 (280)

7,344 (1)

A ?

²⁶⁶Db

266.12103 (39)

20

m

112,740 (360)

7,339 (1)

A ?

²⁶⁷Db

267.12238 (50)

2

h

113,990 (470)

7,337 (2)

A ?

²⁶⁸Db

268.12545 (57)

6

h

116,850 (530)

7,329 (2)

A ?

²⁶⁹Db

269.12746 (83)

3

h

118,730 (770)

7,325 (3)

A ?

²⁷⁰Db

270.13071 (77)

1

h

121,760 (720)

7,316 (3)

A ?

^257mDb

257.10772 (24)

790

ms

100,340 (220)

7,361 (1)

A>87

^258mDb

258.10923 (37)

20

s

101,750 (340)

7,359 (1)

B+~100

^260mDb

260.11130 (25)

103,680 (230)

7,357 (1)

0

^262mDb

262.11408 (20)

106,270 (180)

7,352 (1)

A ?

^263mDb

263.11499 (18)

107,110 (170)

7,352 (1)

0