N1E1P3T1U1N1I1U1M3S1
14 points
NEPTUNIUMS is validvalid
NEPTUNIUM, the chemical element with atomic number 93 [n]
NEPTUNIUM, a radioactive metallic chemical element of the lanthanide series [n]
NEPTUNIUM, the chemical element with atomic number 93 [n]
NEPTUNIUM, a radioactive metallic chemical element of the lanthanide series [n]