Group 9 element
Group 9, by modern IUPAC numbering, is a group (column) of chemical elements in the d-block of the periodic table. Members of Group 9 include cobalt (Co), rhodium (Rh), iridium (Ir) and meitnerium (Mt). These elements are among the rarest of the transition metals.
| Group 9 in the periodic table | |||||||||
|---|---|---|---|---|---|---|---|---|---|
| |||||||||
| ↓ Period | |||||||||
| 4 | Cobalt (Co) 27 Transition metal | ||||||||
| 5 | Rhodium (Rh) 45 Transition metal | ||||||||
| 6 | Iridium (Ir) 77 Transition metal | ||||||||
| 7 | Meitnerium (Mt) 109 unknown chemical properties | ||||||||
|
Legend
| |||||||||
Like other groups, the members of this family show patterns in electron configuration, especially in the outermost shells, resulting in trends in chemical behavior; however, rhodium deviates from the pattern.
This article is issued from Wikipedia. The text is licensed under Creative Commons - Attribution - Sharealike. Additional terms may apply for the media files.