Terbium element has 65 protons, 94 neutrons and 65 electrons.
Terbium is a silvery white metal at room temperature. The melting point of Terbium metal is 1356 ̊C.
Terbium cations include Gd+3 and Gd+4.
» Common Terbium compounds:
• Terbium(III) Chloride, TbCl3
• Terbium(IV) Periodate, Tb(IO4)4