PHOSPHORUS TRIOXIDE,

PHOSPHORUS PENTOXIDE,

SULPHUR TRIOXIDE,

PHOSPHORUS TRICHLORIDE,

PHOSPHORUS ACID,

PHOSPHORUS PENTACHLORIDE,

Phosphorus and its Compounds, Allotropes OF Phosphorus, White Phosphorus, Red Phosphorus, Black Phosphorus, Phosphine(PH3), Acids OF Phosphorus, Halides OF Phosphorus

Solid SeO_3 (selenium trioxide) and TeO_3 exist respectively as