Group 7Edit

Group 7 consists of transition metals. This includes:

Mn (manganese), atomic number 25

Tc (technetium), atomic number 43

Re (rhenium), atomic number 75

Bh (bohrium), atomic number 107

Manganese is the only abundant metal in Group 7. Technetium and rhenium are extremely rare in the Earth's Crust and Bohrium is entirely synthetic.