Question

which of the following is the correct symbol for iodine?
periodictable.pdf
○ a. in
○ b. io
○ c. i
○ d. ir

Explanation:

The chemical symbol for iodine is defined by IUPAC standards, derived from its name. Option a (In) is indium, option b (Io) is not a valid element symbol, option d (Ir) is iridium.

Answer:

c. I