They are the vertical columns.
Metals,Non-Metals,Metalloids, noble gases and rare metals
The Cobalt family, or Group 9 of the periodic table, contains elements such as Cobalt, Rhodium, Iridium and Meitnerium.
The Periodic table can be divided into nine families of elements each having similar properties. The families include:Alkali metalsAlkaline metalsThe Transition metalsOther...
It is a metal.
alkali metals