The Group 9 element reference article from the English Wikipedia on 24-Jul-2004 (provided by Fixed Reference: snapshots of Wikipedia from wikipedia.org)

Group 9 element

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

• Periodic Table of the Elements

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