Elements of the periodic table with I

• Iron

  Chemical element Fe, metal used in steel making.

• Iodine

  Chemical element I, halogen, violet vapor.

• Iridium

  Chemical element Ir, dense platinum‑group metal.

• Indium

  Chemical element In, soft post‑transition metal.

• iodo

  Historical name for the chemical element iodine.

• Iridio

  Italian/Spanish “iridio”, element Ir, hard metal.

• Iodin

  An archaic spelling used for the element iodine.

• ionium

  Old name for thorium-230 isotope, historic use

The words in the list Elements of the periodic table with I come from players of the word game Categories game.