P3R1A1S1E1O1D2Y4M3I1U1M3
22 points
PRASEODYMIUM is validvalid
the chemical element with atomic number 59
a chemical element, a metal with green salts, isolated from the once-supposed element didymium
the chemical element with atomic number 59
a chemical element, a metal with green salts, isolated from the once-supposed element didymium