Question

A science teacher was teaching his students the matter around us.When he taught, he discussed that higher is the melting point of a substance, greater will be the force of attraction between particles. If he took the example of nitrogen, mercury,iron,chalk, which will have higher inter particle force of attraction?
O)Nitrogen
O) Mercury
O) Iron
O)Chalk​

Answer 1

Iron has a higher inter-particle force of attraction.

Explanation:

1. The inter-particle distance is defined as the distance between two particles.
2. The order of inter-particle distance of the states of matter is as follows: $Gases < Liquid < Solid.$
3. Nitrogen is gas and therefore it has maximum space present among the particles.
4. Greater is the space between particles lesser will be the force of attraction.
5. Mercury is found liquid in state and has lesser space available among the particles compared to gases.
6. Iron and Chalk both are found in solid-state but Iron is having much more strong force of attraction among the particles.
7. When chalk is hammered then it changes to form the powder but iron does not.
8. Hence, the correct order of force of attraction between particles among the given example  is as follows: $Nitrogen < Mercury < Chalk < Iron$
9. This signifies that Iron is having a greater inter-particle force of attraction and is having higher melting point compared with other.

Answer 2

Explanation:

The attraction between particles will be stronger in Iron.

Solids have a substantially shorter interparticle distance than liquids and gases. $Gases < Liquids < Solids$ are the order of force of attraction in different fundamental states of matter.

At normal temperature, nitrogen is a gas. As a result, it has more space and less attraction between its particles than a solid.

At normal temperature, mercury is a liquid. As a result, it has more space and less attraction between its particles than a solid, but it has less space and more attraction between its particles than gases.

At room temperature, both chalk and iron are solid, but the force of attraction between particles in iron is stronger than in chalk. When we pound chalk, it becomes powder. Iron, on the other hand, will not change.

Hence the attraction between particles will be stronger in Iron.