C7 (group of seven chemical elements)

The C7 elements, also known as the Group 7 elements, include manganese (Mn), technetium (Tc), rhenium (Re), and bohrium (Bh). These metals share similar chemical properties and are positioned in the same column of the periodic table. They are known for their roles in industrial applications, such as in steel strengthening (manganese), medical imaging (technetium), and catalysts (rhenium). Bohrium is a synthetic, highly unstable element with little practical application. Collectively, they are important for their unique reactivity and their contributions to technology and manufacturing.