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Hydrogen iodide (HI) is a diatomic molecule and hydrogenhalide. Aqueous solutions of HI are known as hydroiodic acidor hydriodic acid, a strong acid.
Then, what is the acid name for hi?
hydroiodic acid
Also, is Hi a element or compound?
All compounds are molecules but not all molecules arecompounds. Molecular hydrogen (H2), molecular oxygen (O2) andmolecular nitrogen (N2) are not compounds because each is composedof a single element. Water (H2O), carbon dioxide (CO2) andmethane (CH4) are compounds because each is made from more than oneelement.
If these are all bond pairs the moleculargeometry is tetrahedral (e.g. CH4). If there is one lone pairof electrons and three bond pairs the resulting moleculargeometry is trigonal pyramidal (e.g. NH3).