Group: Manganese group

Metals of the manganese group (7th subgroup) have similar chemical properties. Manganese and rhenium have technical importance as components of alloys. In organisms, manganese is involved in catalytic processes in metalloenzymes.

25Mn
Manganesesilvery metallic
43Tc
Technetiumshiny gray metal
75Re
Rheniumsilvery-grayish