Which of the following statements about hydrogen are incorrect?A. Hydronium ion, `H_(3)O^(+)` 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.

Which of the following statements about hydrogen are incorrect?A. Hydr

1.	Which of the following statements about hydrogen are incorrect?A. Hydronium ion, `H_(3)O^(+)` 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» (b,c) Both these statement are incorrect. Dihydrogen `(H_(2))` can act as reducing agent. For example `CuO+H_(2) to Cu+H_(2)O` `ZnO+H_(2) to Zn+H_(2)O` Out of the three isotopes, protium `(._(1)^(1)H)` is the most common.

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Which of the following statements about hydrogen are incorrect?A. Hydronium ion, `H_(3)O^(+)` 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.

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