These compounds are all related to phosphorus:
P - PhosphorusP2O5 - Diphosphorus pentoxideH3PO4 - Phosphoric acidNaH2PO4 - Sodium dihydrogen phosphateNa2HPO4 - Disodium hydrogen phosphateNa3PO4 - Trisodium phosphate
These compounds are all related to phosphorus:
P - Phosphorus
P2O5 - Diphosphorus pentoxide
H3PO4 - Phosphoric acid
NaH2PO4 - Sodium dihydrogen phosphate
Na2HPO4 - Disodium hydrogen phosphate
Na3PO4 - Trisodium phosphate