Question

Given below are two statements: 
Statement (I): \(\textit{An element in the extreme left of the periodic table forms acidic oxides.}\) 
Statement (II):\( \textit{Acid is formed during the reaction between water and oxide of a reactive element present in the extreme right of the periodic table.} In the light of the above statements, choose the correct answer from the options given below:\)

• A. Both Statement I and Statement II are false
• B. Statement I is true but Statement II is false
• C. Statement I is false but Statement II is true
• D. Both Statement I and Statement II are true

Hint:

Elements on the left side of the periodic table form basic oxides, while elements on the right side, particularly non-metals, form acidic oxides when reacting with water.

Answer 1

The Correct Option is C

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 (\( \text{SO}_2 \)) reacts with water to form sulfurous acid (\( \text{H}_2\text{SO}_3 \)), and carbon dioxide (\( \text{CO}_2 \)) reacts with water to form carbonic acid (\( \text{H}_2\text{CO}_3 \)). 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.

Answer 2

Step 1: Statement (I) is incorrect because elements on the extreme left of the periodic table, such as alkali metals and alkaline earth metals, form basic oxides, not acidic oxides. Step 2: Statement (II) is correct because non-metals, which are on the extreme right of the periodic table, form acidic oxides when they react with water. For example, sulfur dioxide (\( \text{SO}_2 \)) reacts with water to form sulfurous acid (\( H_2SO_3 \)). Thus, the correct answer is that Statement I is false but Statement II is true.