Editing Group 7 element (section)

{{Short description|Group of chemical elements}}
{{for|the group VIIA ([[Group (periodic table)#CAS and old IUPAC numbering (A/B)|CAS]]), also referred to as "Group 7"|Halogen}}
{{Infobox periodic table group
| title       = Group&nbsp;7 {{nowrap|in the periodic table}}
| group number= 7
| trivial name=
| by element  = manganese group
| CAS         = VIIB
| old IUPAC   = VIIA
| mark        = Mn,Tc,Re,Bh
| left        = [[Group 6 element|group 6]]
| right       = [[Group 8 element|group 8]]
}}
{| class="floatright"
! colspan=2 style="text-align:left;" | ↓&nbsp;<small>[[Period (periodic table)|Period]]</small>
|-
! [[Period 4 element|4]]
| {{element cell image|25|Manganese|Mn| |Solid|Transition metal|Primordial|image=Manganese_electrolytic_and_1cm3_cube.jpg|image caption=Manganese}}
|-
! [[Period 5 element|5]]
| {{element cell image|43|Technetium|Tc| |Solid|Transition metal|From decay|image=Technetium-sample-cropped.jpg|image caption=Technetium}}
|-
! [[Period 6 element|6]]
| {{element cell image|75|Rhenium|Re| |Solid|Transition metal|Primordial|image=Rhenium single crystal bar and 1cm3 cube.jpg|image caption=Rhenium bar}}
|-
! [[Period 7 element|7]]
| {{element cell image|107|Bohrium|Bh| |Unknown phase|Transition metal|Synthetic}}
|-
| colspan="2"|
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''Legend''
{| style="text-align:center; border:0; margin: 0 auto"
|-
| style="border:{{element color|Primordial}}; background:{{Element color|table mark}}; padding:0 2px;" | [[primordial element]]
|-
| style="border:{{element color|from decay}}; background:{{Element color|table mark}}; padding:0 2px;" | [[radioactive decay|element by radioactive decay]]
|-
| style="border:{{element color|Synthetic}}; background:{{Element color|table mark}}; padding:0 2px;" | [[synthetic element]]
|}
|}

'''Group 7''', numbered by [[International Union of Pure and Applied Chemistry|IUPAC]] nomenclature, is a [[Group (periodic table)|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 metal]]s. 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.

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 configuration]]s, 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 element|synthetic]].