Acidic And Basic Oxides

To evaluate the correctness of the given statements, we need to understand the chemical nature of oxides formed by elements based on their position in the periodic table:

1. Statement I: "An element in the extreme left of the periodic table forms acidic oxides."
   • The elements on the extreme left of the periodic table are primarily metals belonging to groups 1 and 2, such as alkali metals and alkaline earth metals. These metals typically form basic oxides, not acidic oxides.
   • On the other hand, elements on the extreme right of the periodic table (non-metals) typically form acidic oxides. Therefore, Statement I is incorrect.
2. Statement II: "Acid is formed during the reaction between water and oxide of a reactive element present in the extreme right of the periodic table."
   • The elements on the extreme right of the periodic table are non-metals and typically form acidic oxides.
   • For example, sulfur dioxide ( ) reacts with water to form sulfurous acid ( ), and carbon dioxide ( ) reacts with water to form carbonic acid ( ). This characteristic confirms Statement II is true.

Based on the above analysis, the correct answer is: Statement I is false but Statement II is true.