Okay so I think it is -ite but I do easily get confused on this 1 less or just less ideas and I was looking it up on the web and came to the conclusion of -ite

If an oxyanion has two forms, which suffix does the form with fewer atoms get?

-ate
-hypo
-per
-ite

3 answers

NOTE:
"The anion with one fewer oxygen atom than the (root)ate anion is named with -ite on the end of the root. ClO2− is chlorite."
from:
https://preparatorychemistry.com/Bishop_Oxyanions.htm
I was correct it was -ite
Yes