Lanthanum (La)
Element number 57, from the lanthanides family.
Lanthanum facts
- Symbol
- La
- Atomic number
- 57
- Atomic mass
- 138.91
- Family
- Lanthanides
- Period
- 6
- Group
- f-block (no group)
What does lanthanum react with?
Lanthanum makes a new substance with 14 other elements and chemicals in our lab:
- Lanthanum + HydrogenLanthanum hydride La + H₂ → LaH₂ · When heated · Try it
- Lanthanum + BoronLanthanum hexaboride La + 6B → LaB₆ · Only in a very hot furnace · Try it
- Lanthanum + CarbonLanthanum carbide La + 2C → LaC₂ · Only in a very hot furnace · Try it
- Lanthanum + NitrogenLanthanum nitride 2La + N₂ → 2LaN · Only when heated very strongly · Try it
- Lanthanum + OxygenLanthanum oxide 4La + 3O₂ → 2La₂O₃ · When heated · Try it
- Lanthanum + FluorineLanthanum fluoride 2La + 3F₂ → 2LaF₃ · At room temperature · Try it
- Lanthanum + SulfurLanthanum sulfide 2La + 3S → La₂S₃ · When heated · Try it
- Lanthanum + ChlorineLanthanum chloride 2La + 3Cl₂ → 2LaCl₃ · When heated · Try it
- Lanthanum + SeleniumLanthanum selenide 2La + 3Se → La₂Se₃ · When heated · Try it
- Lanthanum + BromineLanthanum bromide 2La + 3Br₂ → 2LaBr₃ · When heated · Try it
- Lanthanum + TelluriumLanthanum telluride 2La + 3Te → La₂Te₃ · When heated · Try it
- Lanthanum + IodineLanthanum iodide 2La + 3I₂ → 2LaI₃ · When heated · Try it
- Lanthanum + WaterLanthanum hydroxide + hydrogen gas 2La + 6H₂O → 2La(OH)₃ + 3H₂ · At room temperature · Try it
- Lanthanum + Hydrochloric AcidLanthanum chloride + hydrogen gas 2La + 6HCl → 2LaCl₃ + 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 11 of the others. 21 pairings have never been tried, because not enough atoms have ever existed.