Trends In Periodic Table

To determine the order of acidic character for the given oxides, we need to consider their positions in the periodic table and their properties:

1. Na O (Sodium Oxide): This is a basic oxide because sodium is a metal located in Group 1 of the periodic table, which typically forms basic oxides.
2. MgO (Magnesium Oxide): Also a basic oxide but less basic than Na O. Magnesium is an alkaline earth metal from Group 2.
3. Al O (Aluminum Oxide): This is an amphoteric oxide. Aluminum is a metalloid and can form oxides that exhibit both acidic and basic properties.
4. SiO (Silicon Dioxide): This oxide is acidic. Silicon is a metalloid from Group 14 and forms acidic oxides like SiO .
5. P O (Phosphorus Pentoxide): This is a highly acidic oxide. Phosphorus is a non-metal, and its oxides are strongly acidic.

The acidic character increases as we move from basic to acidic oxides in the periodic table. Therefore, the order of increasing acidic character is:

Na O MgO Al O SiO P O