Question

part e
what is the charge on a hydronium ion?
2-
0
1+
2+
1-
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part f
what is the charge on a hydroxide ion?
2-
1-
1+
2+
0

Explanation:

The hydronium ion is represented as $H_3O^+$, so it has a charge of 1+. The hydroxide ion is represented as $OH^-$, so it has a charge of 1-.

Answer:

Part E: C. 1+
Part F: B. 1-