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Which of the following are arranged in t...

Which of the following are arranged in the correct order?
I. `Gas gt Liquid gt Solid` (Thermal energy)
II. `Gas gt Liquid gt Solid` (Intermolecular force)
III. `Solid gt Liquid gt Gas` (Intermolecular force)
Select the correct option.

A

I and II

B

II and III

C

I and III

D

Only I

Text Solution

AI Generated Solution

The correct Answer is:
To solve the question regarding the arrangement of states of matter based on thermal energy and intermolecular forces, we will analyze each statement one by one. ### Step 1: Analyze Thermal Energy - **Statement I**: `Gas > Liquid > Solid` (Thermal energy) - In gases, the molecules have the highest thermal energy because they move freely and rapidly. In liquids, the molecules have moderate thermal energy as they are in close contact but can still move around. In solids, the molecules are closely packed and have the least thermal energy as they vibrate in fixed positions. **Conclusion**: This statement is correct. ### Step 2: Analyze Intermolecular Forces - **Statement II**: `Gas > Liquid > Solid` (Intermolecular force) - In gases, the intermolecular forces are the weakest because the molecules are far apart and move freely. In liquids, the intermolecular forces are stronger than in gases but weaker than in solids, where the forces are very strong and hold the molecules tightly together. **Conclusion**: This statement is incorrect. The correct order for intermolecular forces should be `Solid > Liquid > Gas`. ### Step 3: Analyze Intermolecular Forces Again - **Statement III**: `Solid > Liquid > Gas` (Intermolecular force) - This statement correctly reflects the strength of intermolecular forces. Solids have strong intermolecular forces, liquids have moderate forces, and gases have weak forces. **Conclusion**: This statement is correct. ### Final Summary - Statement I is correct: `Gas > Liquid > Solid` (Thermal energy) - Statement II is incorrect: `Gas > Liquid > Solid` (Intermolecular force) - Statement III is correct: `Solid > Liquid > Gas` (Intermolecular force) ### Correct Option The correct statements are I and III.
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