Which of the following statements about hydrogen is incorrect?
(a) Hydrogen never acts as cation in Ionic salts
(b) Hydronium ion ,H3O+ exists freely in solution
(c) Dihydrogen does not act as a reducing agent
(d) Hydrogen has three isotopes of which tritium is the most common
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For ionic salts, hydrogen never behaves as cation, but behaves as anion (H-).
H3O+ exists freely in solution.
Dihydrogen acts as a reducing agent.
Hydrogen has three isotopes.
Deuterium (21 H)
Tritium (31 H)
Protium is the most common isotopes of hydrogen with an abundance of 99.98%.