Which of the following statements about hydrogen is incorrect?
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a
Hydronium ion, H3O+exists freely in solution.
b
Dihydrogen does not act as a reducing agent.
c
Hydrogen has three isotopes of which tritium is the most common.
d
Hydrogen never acts as cation in ionic salts.
answer is B.
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Detailed Solution
Dihydrogen acts as a powerful reducing agent and reduces metal oxides such as CuO,ZnO,PbO and Fe3O4 to their respective metals.CuO+H2⟶Cu+H2OZnO+H2⟶Zn+H2OFe3O4+4H2⟶3Fe+4H2OHydrogen has three isotopes of which protium is the most common and tritium is radioactive. therefore third option can also be the answer