Question

Iodine reacts with $conc\;HN{O_3}$ and gives:

Answer 1

iodine belongs to group $17$ in the modern periodic table. The elements that are present in group $17$ are known as halogens. Concentrated nitric acid is a very strong acid compared to sulphuric acid.

Complete step by step answer:
When an acid reacts with the gas it gives oxy acid and water as the product with the liberation of gas.
Oxy acids are compounds that contain hydrogen, carbon, oxygen and one other element.
Oxy acids can be identified by the presence of oxygen in an acid.
The strength of oxyacids depends on the electronegativity of the central atom.
The reaction between iodine and concentrated nitric acid is as follows: ${I_2} + 10HN{O_3} \to 2HI{O_3} + 10N{O_2} + 4{H_2}O$
When iodine reacts with concentrated nitric acid it gives iodic acid along with nitrogen dioxide and water.
Iodic acid is the oxy acid of iodine.
Therefore, iodine reacts with concentrated nitric acid to give iodic acid.

Additional information:
The oxyacids of nitrogen are nitrous acid, nitric acid, nitroxylic acid.
The strongest oxyacid is the perchloric acid and the weakest oxyacid is hypochlorous acid.
There are some organic oxyacids such as carboxylic acids and phenols. The examples of inorganic oxy acids are chromic acid, ferric acid, nitrous acid, meta phosphoric acid.

Note: Oxy acids dissociate to give hydrogen ions and anions of the acid. The salts of oxyacids are stable compared to the oxyacid. The oxyacids only differ by the number of oxygen in the structure. More oxygen atoms stronger will be the acid. The acids that carry oxygen are also called ternary acid.