Polyatomic

Haena =Polyatomic=

Polyatomic ions are charged molecules. The atoms within a polyatomic ion are usually very tightly bound together, so the ion retains its identity within ionic compounds and over the course of many chemical reactions

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Common naming practices
nitrate, NO3- sulfate, SO42- || sulfite, SO32- nitrite, NO2- || perbromate, BrO4- || thiosulfite, S2O22- ||
 * **modify stem name with:** || **meaning** || **examples** ||
 * **-ate** || a common form, containing oxygen || chlorate, ClO3-
 * **-ite** || one less oxygen than **-ate** form || chlorite, ClO2-
 * **per-, -ate** || same charge, but contains one more oxygen than **-ate** form || perchlorate, ClO4-
 * **hypo-, -ite** || same charge, but contains one less oxygen than the **-ite** form || hypochlorite, ClO- hypobromite, BrO- ||
 * **thio-** || replace an O with an S || thiosulfate, S2O32-

-Louis dot diagram
ex)NH₄