Terbium (Tb)

Element number 65, from the lanthanides family.

Terbium facts

Symbol
Tb
Atomic number
65
Atomic mass
158.93
Family
Lanthanides
Period
6
Group
f-block (no group)

What does terbium react with?

Terbium makes a new substance with 10 other elements and chemicals in our lab:

  • Terbium + HydrogenTerbium hydride Tb + H₂ → TbH₂ · When heated · Try it
  • Terbium + NitrogenTerbium nitride 2Tb + N₂ → 2TbN · Only when heated very strongly · Try it
  • Terbium + OxygenTerbium(III,IV) oxide 8Tb + 7O₂ → 2Tb₄O₇ · When heated · Try it
  • Terbium + FluorineTerbium fluoride 2Tb + 3F₂ → 2TbF₃ · At room temperature · Try it
  • Terbium + SulfurTerbium sulfide 2Tb + 3S → Tb₂S₃ · When heated · Try it
  • Terbium + ChlorineTerbium chloride 2Tb + 3Cl₂ → 2TbCl₃ · When heated · Try it
  • Terbium + BromineTerbium bromide 2Tb + 3Br₂ → 2TbBr₃ · When heated · Try it
  • Terbium + IodineTerbium iodide 2Tb + 3I₂ → 2TbI₃ · When heated · Try it
  • Terbium + WaterTerbium hydroxide + hydrogen gas 2Tb + 6H₂O → 2Tb(OH)₃ + 3H₂ · At room temperature · Try it
  • Terbium + Hydrochloric AcidTerbium chloride + hydrogen gas 2Tb + 6HCl → 2TbCl₃ + 3H₂ · At room temperature · Try it

It also blends into a mixture, like an alloy, with 73 other metals when melted together.

Nothing happens when it's simply mixed with 15 of the others. 21 pairings have never been tried, because not enough atoms have ever existed.