Question

What is the colour of iodine?

Answer 1

We need to know that iodine is a chemical element having the symbol $'I'$ with atomic number $53$. The iodine is the heaviest element and it is a stable halogen. The outer electronic configuration of iodine is $5{s^2}5{p^5}$. It requires only one electron to complete the octet. Hence, it easily reacts with other elements and it gains one electron from that element. The iodine vigorously reacts with elements present in the group one.

Complete answer:
We need to remember that the colour of the iodine is purple or violet. The iodine is an important mineral which is mainly found in sea foods. In the human body, the thyroid gland is mainly used to produce the thyroid hormones and this will help to restore the damaged cells and it helps to control the growth, and hold up the healthy metabolism.
Usually the iodine exists as a bluish – black solid at room temperature. But while sublimation, it will convert into purple or violet gas. And the reason behind the colour of the iodine is due to the absorption of visible light by using the electronic transition that takes place between the lowest and highest molecular orbital.

Note:
The iodine is a halogen with purple or violet colour. And this element is highly reactive to attain the octet electronic configuration. When the iodine is reacted with metals present in the group one such as sodium and potassium, there is a formation of metal halide, like sodium iodide and potassium iodide. And the iodine does not easily dissolve in the water. So, the potassium iodide is added to increase the solubility.