Multiple Choice
Is a charge indicated on neutral atoms? If yes, which of the following statements is correct?
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2. Atoms & Elements
Ions
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What is the charge on the hydronium ion (H_3O^+)?
A
1-
B
0
C
2+
D
1+
Verified step by step guidance1
Recall that the hydronium ion is represented as $\mathrm{H_3O^+}$, which means it is a water molecule ($\mathrm{H_2O}$) with an extra proton ($\mathrm{H^+}$) attached.
Understand that a neutral water molecule has no net charge, so its charge is 0.
When an extra proton ($\mathrm{H^+}$) is added to water, it contributes a positive charge of +1 because a proton carries a +1 charge.
Therefore, the hydronium ion ($\mathrm{H_3O^+}$) has a net charge equal to the charge of the added proton, which is +1.
Conclude that the charge on the hydronium ion is $1+$, corresponding to the notation $\mathrm{H_3O^+}$.
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