CHEM 111 Chapter Notes -Magnesium Phosphate, Cobalt(Ii) Carbonate, Potassium Acetate

• School: UMASS-Amherst
• Department: Chemistry
• Course: CHEM 111
• Professor: Beatrice Botch

Document Summary

Nomenclature worksheet 4: naming of salts with oxoanions. "oxo" anions are negatively charged ions containing oxygen plus another element such as nitrogen or sulfur. Note that in the formulas above oxygen is written last. Note also that the number of oxygens and the charge of the ion varies depending upon the element it is bonded to. There is no way to use the periodic table to determine how many oxygens are attached. This is a case where you need to memorize the formulas and charges. Learn (memorize) the names and formulas for the "ate" anions. These are the "ate" anions you should learn: You can recognize an oxoanion because it always has the. Name ate compounds by naming the cation then the anion. When writing a formula containing a polyatomic ion, use parentheses around the ion if more than one is needed to balance the charge. It is incorrect to use parentheses if only one polyatomic ion is used.