P2O5
Reason: di means two. So, diphosphorus means there are two phosphorus atoms. Penta means five. So, pentoxide means there are five oxygen atoms. That's how you get P2O5.
Phophorus pentoxide, a molecular compound with a molecular formula of P4O10 .
The chemical formula for dinitrogen trioxide is N2O3.
SO3 is the chemical formula for sulfur trioxide.
Formula: SO3
The chemical formula for Disilicon trioxide is Si2O3.
Phophorus pentoxide, a molecular compound with a molecular formula of P4O10 .
The chemical formula for dinitrogen trioxide is N2O3.
SO3 is the chemical formula for sulfur trioxide.
Formula: SO3
The chemical formula for Disilicon trioxide is Si2O3.
The formula for xenon trioxide is XeO3.
Formula: XeO3
Formula: SO3
The chemical formula for tellurium trioxide is TeO3.
Formula: B2O3
If Trioxide refers to Ozonide ion, the formula is O3-
Arsenic trioxide refers to Diarsenic trioxide = As2O3 . It is not to be confused as AsO3 which does not exists.