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P2I4 is the chemical formula of diphosphorus tetraiodide (or after IUPAC rules: tetraiododiphosphane).
This is a covalent compound and the name is carbon disulfide.
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
It's a covalent, or molecular compound, so prefixes are required. Its name is pentaphosphorus octochloride.
PCl3 is the chemical formula for phosphorous trichloride.
Diphosphorus tetraiodide, P2I4
P2I4 is the chemical formula of diphosphorus tetraiodide (or after IUPAC rules: tetraiododiphosphane).
This is a covalent compound and the name is carbon disulfide.
carbon dioxide
Chromium(III) Bromide
Silane has the chemical formula SiH4; but silane has covalent bonds.
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
It's a covalent, or molecular compound, so prefixes are required. Its name is pentaphosphorus octochloride.
PCl3 is the chemical formula for phosphorous trichloride.
CF2, based on the name. Whether this compound actually exists is dubious.
the compound (P2O4) is ionic is false.
BH is not stable, there is no compound by that formula. BH3 (boron hydride) generally exists as the dimer, B2H6, diborane.