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How to Write the Formula for Phosphate ion

Learning to name chemical compounds requires that you:

  • Determine the type of compound you are working with.
  • Apply the rules for naming that type of compound.
  • Practice until it becomes second nature.
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Get more practice writing formulas for compounds.

For Phosphate ion use the hints and resources below to help write the formula.

Hint for Writing the Formula for Phosphate ion

Ah yes, the Phosphate ion. The ate tells us it's a polyatomic ion. Gotta look it up in the Common Ion Table.

Polytomic ions ending in ate have one more Oxygen atome than those ending in ite. Good to know.
Phosphate ion Resources