Question

nomenclature of covalent compounds
quiz complete
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which is the correct name for $p_2o_5$?
phosphorus dioxide
phosphorus pentoxide
diphosphorus pentoxide
diphosphorus hexaoxide

Explanation:

second element is changed to "-ide", so oxygen becomes oxide. This matches the formula $P_2O_5$.

Answer:

second element is changed to "-ide", so oxygen becomes oxide. This matches the formula $P_2O_5$.