name one example each of a solid, liquid and a gas. arrange them in the decreasing order or the kinetic energy possessed by the particles in them

One example each of a solid, liquid, and gas are:

1. Solid: Iron (Fe)
2. Liquid: Water (H2O)
3. Gas: Oxygen (O2)

To arrange them in decreasing order of the kinetic energy possessed by the particles in them, we need to understand that kinetic energy is directly related to the motion of particles.

In a solid, such as iron, the particles are closely packed and have the least amount of mobility. The kinetic energy is low as the particles vibrate in fixed positions.

In a liquid, like water, the particles have more freedom to move but are still relatively close together. They are constantly moving and sliding past each other, giving higher kinetic energy compared to solids.

In a gas, such as oxygen, the particles have the highest kinetic energy because they are widely spaced apart and move freely. Gas particles have high-speed random motion, colliding with each other and the walls of the container.

Therefore, the arrangement in decreasing order of kinetic energy would be:

Gas (Oxygen) > Liquid (Water) > Solid (Iron)