|
Mass Number |
Atomic Mass |
% Abundance |
Nuclear Spin |
|---|---|---|---|
|
136 |
135.9071 |
0.19 |
0 |
|
138 |
137.9060 |
0.25 |
0 |
|
139 * |
138.9066 |
0 |
3/2+ |
|
140 |
139.9054 |
88.48 |
0 |
|
141 * |
140.9083 |
0 |
7/2- |
|
142 |
141.9092 |
11.08 |
0 |
|
143 * |
142.9124 |
0 |
3/2+ |
|
144 * |
143.9136 |
0 |
0 |
|
Electron Configuration: |
[Xe] 4f2 6s2 |
|
Relative Atomic Mass: |
140.12 |
|
State (25°C, 1 atm): |
solid, metal |
|
Density: |
8240 kg/m3 |
|
Melting Temperature: |
1072 K |
|
Boiling Temperature: |
3699 K |
© W. Bauer, 1999