Which of the following will not undergo sublimation? Camphor Ammonium Chloride Iodine Sodium Chloride

To determine which substance will not undergo sublimation, we need to understand what sublimation is. Sublimation is the process in which a solid directly converts into a gas without passing through the liquid phase.

Now, let's analyze each substance:

1. Camphor: Camphor is a solid compound that can undergo sublimation. When heated, it directly converts into a gas without melting into a liquid.

2. Ammonium Chloride: Ammonium chloride is also a solid compound that can undergo sublimation. It sublimes when heated, meaning it directly converts into a gas.

3. Iodine: Iodine is a solid element that readily undergoes sublimation. When heated, it directly converts into a purple-colored gas.

4. Sodium Chloride: Sodium chloride, commonly known as table salt, does not undergo sublimation. Instead, it undergoes a different process called dissociation when heated. Dissociation is the separation of the compound into its individual ions, sodium and chloride, without forming a gas.

Therefore, the substance that will not undergo sublimation is Sodium Chloride.