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How to Write the Formula for Calcium 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 Calcium ion use the hints and resources below to help write the formula.

Hint for Writing the Formula for Calcium ion

We need to know the charge on the ion in order to write the formula.

Since Calcium is an element we can use the Periodic Table to determine its charge (see how). Then we write the element symbol with the charge as a superscript.
Calcium ion Resources