Question

What is the name of the element having chemical symbol I ?
(A) Iodine
(B) Iron
(C) Indium
(D) Iridium

Answer 1

Hint: The atomic number of the element is $53$. It is the heaviest of the stable halogens; it is a lustrous, purple-black non-metallic solid that melts to form a deep violet liquid at $114$ degrees Celsius and boils to a violet gas at $184$ degrees Celsius under normal conditions.

Complete answer:
Chemical symbols are abbreviations for chemical elements, functional groups, and chemical compounds that are used in chemistry. Chemical element symbols are usually composed of one or two letters from the Latin alphabet, with the first letter capitalised.
Iodine is the element having chemical symbol I. Iron, Indium and Iridium have the chemical symbols Fe, In and Ir respectively.
Iodine and its derivatives are mainly used in the food industry. It has also found favour as a non-toxic radiocontrast material due to its high atomic number and ease of binding to organic compounds. Radioactive isotopes of iodine can also be used to treat thyroid cancer due to the specificity of their intake by the human body.
Hence, the name of the element having chemical symbol I is Iodine. So, the correct option is (A).

Note:
A particular isotope, ionisation or oxidation state, or other atomic information may be applied to the symbol as superscripts or subscripts in addition to the letters for the element itself. Rather than having an isotopic information attached to their element symbol, a few isotopes have their own unique symbols.