1. SrO is predicted to be basic, and similar to CaO. 2. Cl 2 O and Cl 2 O 5 are predicted to be acidic. Cl 2 O 5 is predicted to be more acidic than Cl 2 O. Describe how this can be confirmed by experiment. H 2 SO 3 Metals form basic oxides. When several oxides are possible, the higher oxidation forms are more basic.
Nonmetals form acidic oxides.
When several oxides are possible, the higher oxidation forms are more acidic. One way to study such an oxide is to make freshly prepared aluminum oxide by precipitation from 0.1 M AlCl 3 using 6 M NH 3 . Wash the resulting material with very large amounts of water. These observations support notions of the periodic variations in the properties of elements.