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The formula of diphosphorus textroxide is P2O4.
Dinitrogen tetraiodide ================
SeI4
diphosphorus pentaselenide
formula of photosynthesis is 6CO2 + 6H2O- > C6H1206 + 602
Diphosphorus tetraiodide, P2I4
The known phosphorus iodide are P2I4 (diphosphorus tetraiodide) and PI3 (phosphorus triiodide).
P2I4 is the chemical formula of diphosphorus tetraiodide (or after IUPAC rules: tetraiododiphosphane).
Tetraiodide does not exist alone. A tetraiodide is a compound that contains four iodine atoms in a molecule. Some examples include carbon tetraiodide (CI4), diphosphorus tetraiodide (P2I4), and silicon tetraiodide (SiI4).
Don't know P2I5. PI5 (phosphorus pentaiodide) is more likely but couldn't find anything on that. Maybe this is meant: P2I4 , diphosphorus tetraiodide synthesized from phosphorus triiodide 2 PI3 → P2I4 + I2
Carbon tetraiodide or tetraiodomethane.
That would be germanium tetraiodide
The allotrope diphosphorus is P2.
The formula of diphosphorus textroxide is P2O4.
According to two Wikipedia articles, phosphorus and iodine can form phosphorus triiodide (PI3) and diphosphorus tetraiodide (P2I4). These compounds are made from the covalent bonding between the phosphorus and iodine atoms. Nonmetals tend to form covalent bonds with other nonmetals.
The foumula for diphosphorus dioxide is P2 O2 by Calpio
Diphosphorus trioxide is a covalent compound.