Occasionally, we will see an ionic compound that has a -1 counterion. (Later we will find that – 1 counterions are often more than spectators and take an active role in many reactions.)
a. What elements (other than H) on the periodic table are most likely to form a -1 anion?
b. Draw a Lewis structure for the ionic compound NH4Cl (Hint: One atom is a -1 counterion).
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