R1U1T1H4E1N1I1U1M3S1
15 points
RUTHENIUMS is validvalid
RUTHENIUM, the chemical element with atomic number 44 [n]
RUTHENIUM, a metallic element of the platinum group [n]
RUTHENIUM, the chemical element with atomic number 44 [n]
RUTHENIUM, a metallic element of the platinum group [n]