ANSWERS: 1
  • In the first compound 2K3PO4: The anion is PO4^3-, called Phosphate 3Al(OH)3: The anions are the 3 OH-, called hydroxide 5Fe2(SO4)3: The anions are the 3 SO4^2-, called sulfate All of these anions are polyatomic, because they are composed of more than one atom, that are covalently bonded.

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