When calculating the number of electrons for the Lewis structure of a polyatomic ion,you must add one electron for each negative charge and subtract one electron for each positive charge.

Question

Quizplus · Accepted Answer

This is correct. The number of electrons for the Lewis structure of a polyatomic ion is calculated by adding one electron for each negative charge and subtracting one electron for each positive charge. This gives the total number of valence electrons that are available for bonding and forming the structure of the ion.

When Calculating the Number of Electrons for the Lewis Structure