Question

11. Which one of the following statements is not true?
a. The molecules in a solid vibrate about a fixed position
b. The molecules in a liquid are arranged in a regular pattern
The molecules in a gas exert negligibly small forces on each other
d. The molecules of a gas occupy all the space available​

Answer 1

The incorrect statement among the above given statements is:

The molecules in a liquid are arranged in a regular pattern.

Reasons why the above statement is incorrect:

• The molecules in a liquid exerts lesser intermolecular force between each other due to bigger intermolecular distances.
• The molecules in a liquid exerts lesser intermolecular force between each other due to bigger intermolecular distances.The molecules in liquids are close together but packed loosely as compared to solids, this is why they are not arranged in a regular pattern.

Option a:

• it is correct because in solids the molecules are tightly packed and they do not move. They have strong intermolecular forces between each other.
• They form regular pattern as they do not have any movement and vibrate or oscillate about their fixed position.

Option c and d:

• The options are correct as: The molecules in gases exerts least or negligible force on each other as they have larger intermolecular distances between them.
• ger intermolecular distances between them.The molecules are free and they move around the whole container they are kept in and occupy the whole space.

Answer 2

Answer:

Waiting for you to come back