Superscript indicates amount of charge on ion. It describes magnitude of charge.
The typical suffix used for a negative ion is -ide as in chloride, oxide, sulfide, etc.
Cation = negative ion
loses 2 electrons to form a calcium ion with 2+ charge
ion k
The presence of a transition metal.Read more: A_colored_ion_generally_indicates_what
The charge of Bromine would be -1.
Lead(IV) Chloride
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put parentheses around the atoms in the ion and then add a subscript - apex
A chloride ion would simply be represented by chlorine's chemical symbol along with a negative 1 to indicate the gain of an electron: Cl-1 or Cl1- or just Cl-.
More than one polyatomic ion should be indicated in a chemical formula by putting parentheses around the atoms in the ions and then adding a subscript.
Iodine (in fact the ion triiodide - I-3 - form with starch a very colored complex; the reaction is specific and sensible.