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QUESTION
Ions of the elements oxygen (O), sulfur (S), and selenium (Se) usually have charges of -2. Ions of the elements fluorine...
Ions of the elements oxygen (O), sulfur (S), and selenium (Se) usually have charges of -2. Ions of the elements fluorine (F), chlorine (Cl), and bromine (Br) usually have charges of -1.This demonstrates that
