Which of the following statements about hydrogen is incorrect ?

Options

A. Dihydrogen does not act as a reducing agent.
B. Hydrogen has three isotopes of which tritium is the most common.
C. Hydrogen never acts as cation in ionic salts.
D. Hydronium ion, `H_(3)O^(+)`, exists freely in solution

Answer

a,b

Explanation

`(a)` and `(b)` options are incorrect
Correct `-` Dihydrogen act as reducing agent for example
`3overset(0)(H)_(2) +overset(0)(H)_(2) rarr 2 overset(-1+1) (NH)_(3)(` Oxidation no. of `H_(2)` increases `)`
Correct `-` Hydrogen has three isotopes of which protium `(._(1)H^(1))` is the most common.