Periodic Table:

Element 44 - Ruthenium / Ruthenium

(Latin / English)

Mass Number

Atomic Mass

% Abundance

Nuclear Spin

96

95.9076

5.53

0

97 *

96.9076

0

5/2+

98

97.9053

1.87

0

99

98.9059

12.70

5/2+

100

99.9042

12.60

0

101

100.9056

17.10

5/2+

102

101.9043

31.60

0

103 *

102.9063

0

5/2+

104

103.9054

18.60

0

106 *

105.9073

0

0

(* = unstable isotope)

Electron Configuration:

[Kr] 4d7 5s1

Relative Atomic Mass:

101.07

State (25°C, 1 atm):

solid, metal

Density:

12370 kg/m3

Melting Temperature:

2583 K

Boiling Temperature:

4173 K

© W. Bauer, 1999