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

Hint for Writing the Formula for Chloride ion

From the Periodic Table we can tell that Chlorine (Cl) is a non-metal and will form a negative ion (called an anion).

We can also see that Cl is in Group 7A (also called Group 17). Elements in Group 7A form ions with a negative one charge.

By convention we just write a negative sign instead of -1.
Chloride ion Resources