Question

Which has the least energetic molecules and why?

• A. Solids
• B. Liquids
• C. Gases
• D. Plasmas

Answer 1

The correct option is A

Solids

Explanation for the correct option:

Option (A) : Solids

• Due to the strong attraction of Van der-Waal forces, the molecules in solids are extraordinarily closely packed.
• Since solids cannot move and can only vary around their mean position, they have the lowest kinetic energy.
• The pressure is relatively strong since the molecules have a limited area to move.

Explanation for the incorrect options:

Option (B): Liquids

• Although not nearly as close as they are in solids, molecules in liquids are nonetheless pretty close to one another.
• Since their molecules move by convection, liquids have more kinetic energy than solids.
• Molecules can move more freely since the Vander-Waal forces are weaker.

Option (C) : Gases

• As a result of the distance between molecules in gases, there are hardly any forces at all.
• Because of their rapid movement and unpredictable mobility, gas molecules have the highest kinetic energy.
• The Vander-Waal troops are particularly weak.

Option (D) : Plasmas

• The most energetic state of matter is plasma.
• Free-moving electrons, positive ions, and neutral particles make up its composition.
• Electrical conductivity in plasma is quite high.
• Despite having no distinct shape or volume, it is intimately connected to the gas phase.

Therefore, the correct option is Option (A), Solids