which is the formula for diarsenic pentoxide?\nar2o5\nas5o2\nas2o5\n2as5o

Explanation:

Step1: Identify element symbols

Ar is argon, As is arsenic. Di - means 2 and penta - means 5 for the elements in the compound. We are dealing with arsenic and oxygen.

Step2: Write the formula

For diarsenic pentoxide, we have 2 arsenic (As) atoms and 5 oxygen (O) atoms, so the formula is $As_2O_5$.

Answer:

As2O5