P3E1N1T1O1X8I1D2E1S1
20 points
PENTOXIDES is validvalid
PENTOXIDE, [n]
PENTOXIDE, an oxide containing five atoms of oxygen in each molecule; as, phosphorus pentoxide [n]
PENTOXIDE, [n]
PENTOXIDE, an oxide containing five atoms of oxygen in each molecule; as, phosphorus pentoxide [n]