Monatomic and Polyatomic Ions

51 terms by rschoono 

Create a new folder

Advertisement Upgrade to remove ads

Monatomic and polyatomic ions, specifically for students of CHEM 127 at Cal Poly SLO, but useful for anyone. Note that only a subset of possible monatomic ions are included (there are numerous monatomic cations). Also, these flashcards don't have subscripts/superscripts which are, of course, required in real usage.

fluoride ion



chloride ion

bromide ion



iodide ion

oxide ion

O2 2-

S 2-

sulfide ion

selenide ion

Se 2-

Te 2-

telluride ion

lithium ion



sodium ion

magnesium ion

Mg 2+

Zn 2+

zinc ion

cadmium ion

Cd 2+

Ca 2+

calcium ion

barium ion

Ba 2+

V 3+

vanadium (III) ion

silver ion

Ag +

Sn 4+

tin (IV) ion

scandium (I) ion

Sc +

Hg2 2+

mercury (I) ion

mercury (II) ion

Hg 2+

NH4 +

ammonium ion

acetate ion

C2H3O2 -


hydroxide ion

hypochlorite ion

ClO -

ClO2 -

chlorite ion

chlorate ion

ClO3 -

ClO4 -

perchlorate ion

nitrite ion

NO2 -

NO3 -

nitrate ion

permanganate ion

MnO4 -


cyanide ion

silicate ion

SiO3 2-

S2O3 2-

thiosulfate ion

hydride ion


CO3 2-

carbonate ion

hydrogencarbonate ion

HCO3 -

CrO4 2-

chromate ion

dichromate ion

Cr2O7 2-

PO4 3-

phosphate ion

hydrogenphosphate ion

HPO4 2-

H2PO4 -

dihydrogenphosphate ion

phosphite ion

PO3 3-

SO4 2-

sulfate ion

sulfite ion

SO3 2-

HSO4 -

hydrogensulfate ion

cyanate ion



thiocyanate ion

oxalate ion

C2O4 2-

AsO4 3-

arsenate ion

peroxide ion

O2 2-

Please allow access to your computer’s microphone to use Voice Recording.

Having trouble? Click here for help.

We can’t access your microphone!

Click the icon above to update your browser permissions above and try again


Reload the page to try again!


Press Cmd-0 to reset your zoom

Press Ctrl-0 to reset your zoom

It looks like your browser might be zoomed in or out. Your browser needs to be zoomed to a normal size to record audio.

Please upgrade Flash or install Chrome
to use Voice Recording.

For more help, see our troubleshooting page.

Your microphone is muted

For help fixing this issue, see this FAQ.

Star this term

You can study starred terms together

NEW! Voice Recording

Create Set