Hydrogen ions can be shown as which of the following?
A
$$H_3O^+$$ ion
B
$$H^+$$ ion
C
$$H_2$$ gas
D
$$H_2O$$ molecule
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Solution
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Correct option is A. $$H^+$$ ion Hydrogen ions can be shown $$H^+$$ ion. Among the other options, $$H_3O^+$$ ion is a hydronium ion that is formed when hydrogen ion combines with a water molecule. $$H_2O$$ and $$H_2$$ are not ions.
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