Terbium is a chemical element; it has symbol Tb and atomic number 65. It is a silvery-white, rare earth metal that is malleable and ductile. The ninth member of the lanthanide series, terbium is a fairly electropositive metal that reacts with water, evolving hydrogen gas.

Apr 30, 2025 · Terbium (Tb), chemical element, a rare-earth metal of the lanthanide series of the periodic table. Terbium is a moderately hard, silvery white metal that is stable in air when in pure form. The metal is relatively stable in air even at high temperatures, because of formation of a tight, dark oxide.

Terbium, element number 65, is no different and lies in the middle of the lanthanide series in between gadolinium and dysprosium. It is one of the rarer rare earth elements, although it is still twice as common as silver in the Earth's crust.

Jul 17, 2013 · Along with other rare earth elements, terbium can be found in minerals, including cerite and gadolinite. The element can be extracted from monazite, in which it is present to the extent of 0.03...

Periodic Table element Summary Terbium. Terbium is a chemical element with symbol Tb and atomic number 65. Classified as a lanthanide, Terbium is a solid at 25°C (room temperature).

Since terbium was used to manufacture the first rewritable CD, the element has been represented by the compact disc symbol [1]. It is commercially produced by reducing anhydrous chloride or fluoride with calcium metal through vacuum distillation [1] .

Terbium was discovered in 1843. It is stable in the air but very reactive in nature. It is used as a component of Terfenol –D which is used in actuators and in sensors.

Dec 10, 2023 · Terbium is a chemical element with the symbol Tb and atomic number 65. It is a silvery-white, rare earth metal that is malleable, ductile, and soft enough to be cut with a knife. Terbium is a member of the lanthanide series, a group of 15 similar elements between lanthanum and lutetium in the periodic table. Discovery and Naming

Dec 7, 2019 · Terbium is a soft, silvery rare earth metal with element symbol Tb and atomic number 65. It isn't found free in nature, but it occurs in many minerals and is used in green phosphors and solid state devices.

Terbium is the 65th element in the periodic table and has a symbol of Tb and atomic number of 65. It has an atomic weight of 158.92535 and a mass number of 159. Terbium has sixty-five protons and ninety-four neutrons in its nucleus, and sixty-five electrons in six shells.