Neptunium (Np)
Element number 93, from the actinides family. It is made by scientists in special labs.
Neptunium facts
- Symbol
- Np
- Atomic number
- 93
- Atomic mass
- 237
- Family
- Actinides
- Period
- 7
- Group
- f-block (no group)
What does neptunium react with?
Neptunium makes a new substance with 6 other elements and chemicals in our lab:
- Neptunium + OxygenNeptunium(IV) oxide Np + O₂ → NpO₂ · Only in a special nuclear lab (it is radioactive) · Try it
- Neptunium + FluorineNeptunium(VI) fluoride Np + 3F₂ → NpF₆ · Only in a special nuclear lab (it is radioactive) · Try it
- Neptunium + ChlorineNeptunium(IV) chloride Np + 2Cl₂ → NpCl₄ · Only in a special nuclear lab (it is radioactive) · Try it
- Neptunium + BromineNeptunium(IV) bromide Np + 2Br₂ → NpBr₄ · Only in a special nuclear lab (it is radioactive) · Try it
- Neptunium + IodineNeptunium(III) iodide 2Np + 3I₂ → 2NpI₃ · Only in a special nuclear lab (it is radioactive) · Try it
- Neptunium + Hydrochloric AcidNeptunium(IV) chloride + hydrogen gas Np + 4HCl → NpCl₄ + 2H₂ · 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 19 of the others. 21 pairings have never been tried, because not enough atoms have ever existed.