Group 9 element
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The Group 9 elements are:
- Cobalt (27)
- Rhodium (45)
- Iridium (77)
- Meitnerium (109)
| Key to color coding in table slice on right: | Transition metals |
Color coding for these atomic numbers: At room temperature, all are solid; red indicates item is synthetic and does not occur naturally.
See also
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