Neptunium
/nepˈtuːniəm/
Definition 1 of 1
Pro Tip 1/3Scientific Uses
Neptunium is important in research and nuclear applications but not encountered in everyday language. 
Scientists handle neptunium with care due to its radioactivity.
Pro Tip 2/3Atomic Number 93
Knowing neptunium is the 93rd element helps understand its position in the periodic table and discussions about elements. 
Neptunium, with atomic number 93, comes after uranium.
Pro Tip 3/3Not Natural
Neptunium is a man-made element, not commonly found in nature, mainly discussed in science contexts. 
The neptunium in the lab was produced artificially.