Isotope

Isotopic Mass

amu

% Abundance

T_1/2

T_1/2

Units

Mass Excess

KeV

Binding Energy

Per Nucleon

KeV

Decay

Mode

Branching

Ratio

²⁴⁵Md

245.08083 (35)

900

us

75,290 (320)

7,441 (1)

SF

?

²⁴⁶Md

246.08189 (35)

1

s

76,280 (330)

7,440 (1)

A

?

²⁴⁷Md

247.08164 (35)

270

ms

76,040 (320)

7,444 (1)

SF

?

²⁴⁸Md

248.08282 (26)

7

s

77,150 (240)

7,442 (1)

B+

80 10

²⁴⁹Md

249.08301 (24)

24

s

77,330 (220)

7,443 (1)

A>60

²⁵⁰Md

250.08442 (32)

52

s

78,640 (300)

7,441 (1)

B+

93 3

²⁵¹Md

251.08484 (22)

4

m

79,030 (200)

7,442 (1)

B+

95#

²⁵²Md

252.08656 (21)

2.3

m

80,630 (200)

7,438 (1)

B+>50

²⁵³Md

253.08728 (22)

12

m

81,300 (200)

7,438 (1)

B+~100

²⁵⁴Md

254.08966 (11)

10

m

83,510 (100)

7,431 (0)

B+~100

²⁵⁵Md

255.0910827 (71)

27

m

84,843.0 (6.6)

7,428.73 (2.6)

B+

92 2

²⁵⁶Md

256.094059 (57)

77

m

87,615 (53)

7,420.4 (2.1)

B+

?

²⁵⁷Md

257.0955414 (30)

5.52

h

88,996.2 (2.8)

7,417.57 (1.1)

EC

85 3

²⁵⁸Md

258.0984313 (50)

51.5

d

91,688.2 (4.6)

7,409.67 (1.8)

A~100

²⁵⁹Md

259.10051 (22)

1.6

h

93,620 (200)

7,405 (1)

SF

?

²⁶⁰Md

260.10365 (34)

27.8

d

96,550 (320)

7,396 (1)

SF

?

²⁶¹Md

261.10572 (70)

40

m

98,480 (650)

7,391 (2)

A ?

²⁶²Md

262.10887 (63)

3

m

101,410 (580)

7,383 (2)

SF ?

^245mMd

245.08083 (35)

400

ms

75,290 (320)

7,441 (1)

A

?

^246mMd

246.08189 (35)

1

s

76,280 (330)

7,440 (1)

A

^247mMd

247.08164 (35)

1.12

s

76,040 (320)

7,444 (1)

A

100

^249mMd

249.08301 (24)

1.9

s

77,330 (220)

7,443 (1)

A

100

^254mMd

254.08966 (11)

28

m

83,510 (100)

7,431 (0)

B+~100

^258mMd

258.0984313 (50)

57

m

91,688.2 (4.6)

7,409.67 (1.8)

EC

?

^248mMd

248.08282 (26)

77,150 (240)

7,442 (1)

0

^250mMd

250.08442 (32)

78,640 (300)

7,441 (1)

0

^251mMd

251.08484 (22)

79,030 (200)

7,442 (1)

0

^252mMd

252.08656 (21)

80,630 (200)

7,438 (1)

0

^253mMd

253.08728 (22)

81,300 (200)

7,438 (1)

0

^255mMd

255.0910827 (71)

84,843.0 (6.6)

7,428.73 (2.6)

0

^256mMd

256.094059 (57)

87,615 (53)

7,420.4 (2.1)

0