Question

What type of solid is iodine?

Answer 1

Hint : Iodine is a chemical element with atomic number 53 and the symbol I. Under normal circumstances, it exists as a semi-lustrous, non-metallic solid that melts to create a deep violet liquid at 114 degrees Celsius and boils to form a violet gas at 184 degrees Celsius.

Complete Step By Step Answer:
At normal temperature, iodine is a nonmetallic, almost black solid with a glistening crystalline look. A molecular solid is iodine, for example. At room temperature, it also has a modest vapour pressure. A covalent crystal is another name for iodine. A chemical relationship involving the sharing of pairs of electrons between atoms is known as a covalent bond. As a result of this sharing, the attraction and repulsive forces between those atoms are in a stable equilibrium. Each atom in a covalent solid is covalently linked to its closest neighbours. As a result, the entire crystal is effectively one big molecule.
The extraordinary hardness of these solids is due to the extremely high binding interactions that connect all neighbouring atoms. They can't be broken or abraded without a lot of covalent chemical bonds breaking. Similarly, because the entire crystal is one big molecule, a covalent solid cannot “melt” in the traditional sense. These substances generally disintegrate into their constituent components when heated to extremely high temperatures.
Because there are no delocalized electrons, covalent network solids have low electrical conductivity. Because the macromolecule consists of uncharged atoms rather than ions, unlike ionic compounds, it is still unable to transmit electricity when molten.

Note :
Iodine is found in a variety of oxidation states, including iodide ( ${{I}^{-}}$ ), iodate ( $I{{O}_{3}}^{-}$ ), and periodate anions. It is the least common of the stable halogens, occupying the sixty-first position in the periodic table. It is the heaviest nutrient in terms of necessary minerals. Thyroid hormones require iodine to be synthesised. Around two billion individuals suffer from iodine deficiency, which is the greatest avoidable cause of intellectual impairments.