Protactinium (Pa)
Element number 91, from the actinides family.
Protactinium facts
- Symbol
- Pa
- Atomic number
- 91
- Atomic mass
- 231.04
- Family
- Actinides
- Period
- 7
- Group
- f-block (no group)
What does protactinium react with?
Protactinium makes a new substance with 5 other elements and chemicals in our lab:
- Protactinium + OxygenProtactinium oxide 4Pa + 5O₂ → 2Pa₂O₅ · Only in a special nuclear lab (it is radioactive) · Try it
- Protactinium + FluorineProtactinium fluoride 2Pa + 5F₂ → 2PaF₅ · Only in a special nuclear lab (it is radioactive) · Try it
- Protactinium + ChlorineProtactinium chloride 2Pa + 5Cl₂ → 2PaCl₅ · Only in a special nuclear lab (it is radioactive) · Try it
- Protactinium + BromineProtactinium bromide 2Pa + 5Br₂ → 2PaBr₅ · Only in a special nuclear lab (it is radioactive) · Try it
- Protactinium + IodineProtactinium iodide 2Pa + 5I₂ → 2PaI₅ · Only in a special nuclear lab (it is radioactive) · 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 20 of the others. 21 pairings have never been tried, because not enough atoms have ever existed.