Arrange the following oxides in order of increasing acidity: As2O5, P2O5, SnO2, N2O5, BaO, and SeO3. (Use the appropriate symbol to separate substances in the list.)

Question

Arrange the following oxides in order of increasing acidity: As2O5, P2O5, SnO2, N2O5, BaO, and SeO3. (Use the appropriate <, =, or > symbol to separate substances in the list.)

I got BaO<SnO_2<As_2O_5<P_2O_5<N_2O_5<SeO_3 but its wrong