Question

exit ticket: covalent naming/formulas
which of the following is the correct name for p₂o₅?
phosphorus oxide
phosphorus dioxide
phosphorus (ii) oxide
diphosphorus pentoxide

Explanation:

In covalent - compound naming, the prefixes indicate the number of atoms of each element. 'Di -' means 2 and 'penta -' means 5. For the formula $P_2O_5$, there are 2 phosphorus atoms and 5 oxygen atoms. So the name is diphosphorus pentoxide.

Answer:

D. Diphosphorus pentoxide