Group 7 element
Group 7, numbered by IUPAC nomenclature, is a group of elements in the periodic table. It contains manganese (Mn), technetium (Tc), rhenium (Re) and bohrium (Bh). This group lies in the d-block of the periodic table, and are hence transition metals. This group is sometimes called the manganese group or manganese family after its lightest member; however, the group itself has not acquired a trivial name because it belongs to the broader grouping of the transition metals.
| Group 7 in the periodic table | |||||||||
|---|---|---|---|---|---|---|---|---|---|
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| ↓ Period | |||||||||
| 4 | Manganese (Mn) 25 Transition metal | ||||||||
| 5 | Technetium (Tc) 43 Transition metal | ||||||||
| 6 | Rhenium (Re) 75 Transition metal | ||||||||
| 7 | Bohrium (Bh) 107 Transition metal | ||||||||
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Legend
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The group 7 elements tend to have a major group oxidation state (+7), although this trend is markedly less coherent than the previous groups. Like other groups, the members of this family show patterns in their electron configurations, especially the outermost shells resulting in trends in chemical behavior. In nature, manganese is a fairly common element, whereas rhenium is rare, technetium only occurs in trace quantities, and bohrium is entirely synthetic.