Question

Which of the following substances in the gaseous state should be called a vapour: 1.oxygen 2.fluorine 3.chlorine 4.iodine

Answer 1

Iodine in the gaseous state is called Vapor.

Explanation:

• The substance which exhibits phase change, it is called vapor, whereas the substance which doesn't exhibit phase change, it is called gas.
• Among the given compounds, iodine is considered as vapor, because it exhibits phase change.
• Iodine at room temperature remains as solid, whereas out of room temperature it changes its phase.
• On the other hand, substances such as oxygen, Fluorine, and Chlorine are at the same phase (gas) thus they are called gas at all temperature.

Learn more about such concept

Difference between gas and vapour (4 points)..

https://brainly.in/question/1217250

Can we regard gaseous state of iodine as vapour? explain.

https://brainly.in/question/4249451

Answer 2

The answer is iodine . This is because at room temperature iodine exists as a solid. The other three substances- oxygen, fluorine and chlorine exist as a gas at room temperature.

I hope this helps ( ╹▽╹ )