Isotope

Isotopic Mass

amu

% Abundance

T_1/2

T_1/2

Units

Mass Excess

KeV

Binding Energy

Per Nucleon

KeV

Decay

Mode

Branching

Ratio

²⁶³Hs

263.12856 (37)

1

ms

119,750 (350)

7,295 (1)

A

100

²⁶⁴Hs

264.128395 (47)

540

us

119,599 (44)

7,298.2 (1.7)

A~50

²⁶⁵Hs

265.13009 (15)

2.1

ms

121,170 (140)

7,295 (1)

A~100

²⁶⁶Hs

266.13010 (31)

2.7

ms

121,190 (280)

7,298 (1)

A

?

²⁶⁷Hs

267.13179 (11)

32

ms

122,760 (100)

7,295 (0)

A

100

²⁶⁸Hs

268.13216 (44)

2

s

123,110 (410)

7,297 (2)

A ?

²⁶⁹Hs

269.13406 (12)

27

s

124,870 (120)

7,293 (0)

A

100

²⁷⁰Hs

270.13465 (31)

30

s

125,430 (290)

7,294 (1)

A

100

²⁷¹Hs

271.13766 (36)

40

s

128,230 (340)

7,286 (1)

A ?

²⁷²Hs

272.13905 (62)

40

s

129,530 (580)

7,284 (2)

A ?

²⁷³Hs

273.14199 (88)

50

s

132,260 (820)

7,277 (3)

A ?

²⁷⁴Hs

274.14313 (70)

1

m

133,330 (650)

7,276 (2)

A ?

²⁷⁵Hs

275.14595 (77)

30

m

135,950 (710)

7,270 (3)

A ?

²⁷⁶Hs

276.14721 (88)

1

h

137,120 (820)

7,268 (3)

A ?

²⁷⁷Hs

277.14984 (78)

40

m

139,580 (730)

7,262 (3)

SF

100

^265mHs

265.13009 (15)

780

us

121,170 (140)

7,295 (1)

A~100

^267mHs

267.13179 (11)

200

ms

122,760 (100)

7,295 (0)

A

?

^263mHs

263.12856 (37)

119,750 (350)

7,295 (1)

A ?