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KBonacker
The empirical formula is the lowest reduced ration of the atoms present. In this case, it is P2O5

Answer:

The empirical formula of P4O10 is P2O5 . This is arrived at by dividing both subscripts by their highest common factor 2.

Explanation:

Empirical Formula of a compound is the lowest whole number ratio between the compound elements it is sometimes different from the standard formula of the compound).