Printable Common Ions Chart
This one-page chart is for students working with formula mass, chemistry homework, and basic ion identification. It lists common polyatomic ions in three columns: Ion, Formula, and Charge. Rows include examples such as Ammonium, NH4, +1; Hydroxide, OH, -1; and Nitrate, NO3, -1.
Free printable · PDF
- 1 page
- US Letter — choose “Fit to page” for A4
- PDF, 72 KB
Free for personal, family and classroom use.
Use it as a quick reference while writing formulas or checking charges. Keep it beside a worksheet, study page, or calculator so you can match ion names with formulas and charges without flipping through notes.
Good for
- Check common ion charges
- Write ionic formulas
- Support formula mass practice
Tip: Print it on cardstock or slide it into a binder sleeve for repeated use.
4 files · PDF, DOCX, XLSX
Get every sheet: Formula Mass Worksheets
This sheet plus 3 more in one download, with the editable Word and Excel files. Formula mass practice worksheets with worked answers, an empirical formula worksheet, a common and polyatomic ions chart and an atomic mass reference table.
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Printable Formula Mass Practice Sheet
Printable Empirical Formula Worksheet
Printable Atomic Masses Chart