Which of the following statement about hydrogen is incorrect ?

Question

Both CO₂ and H₂ gases are -

Answer 1

To determine which statement about hydrogen is incorrect, let's examine each one:

Hydrogen never acts as cation in ionic salts: This statement is true. Hydrogen can exist as a cation ($H^+$), but in ionic salts, it doesn't typically form stable ionic compounds where it acts as a cation.
Hydronium ion, ${H_3O^+}$ exists freely in solution: This statement is true. The hydronium ion, $\text{H}_3\text{O}^+$, is a common representation of hydrogen ions in aqueous solutions, signifying that protons do not exist freely but associate with water molecules.
Dihydrogen does not act as a reducing agent: This statement is false. Dihydrogen ($H_2$) is indeed a reducing agent and can readily donate electrons to other substances, reducing them in a chemical reaction.
Hydrogen has three isotopes of which tritium is the most common: This statement is incorrect. Hydrogen has three isotopes: protium ($^1\text{H}$), deuterium ($^2\text{H}$), and tritium ($^3\text{H}$). Among these, protium is the most abundant isotope, not tritium. Tritium is relatively rare.

Upon reviewing all statements, the incorrect one is: "Hydrogen has three isotopes of which tritium is the most common." Therefore, the correct answer is this statement.

Answer 2

To determine which statement about hydrogen is incorrect, let's examine each one:

Hydrogen never acts as cation in ionic salts: This statement is true. Hydrogen can exist as a cation ($H^+$), but in ionic salts, it doesn't typically form stable ionic compounds where it acts as a cation.
Hydronium ion, ${H_3O^+}$ exists freely in solution: This statement is true. The hydronium ion, $\text{H}_3\text{O}^+$, is a common representation of hydrogen ions in aqueous solutions, signifying that protons do not exist freely but associate with water molecules.
Dihydrogen does not act as a reducing agent: This statement is false. Dihydrogen ($H_2$) is indeed a reducing agent and can readily donate electrons to other substances, reducing them in a chemical reaction.
Hydrogen has three isotopes of which tritium is the most common: This statement is incorrect. Hydrogen has three isotopes: protium ($^1\text{H}$), deuterium ($^2\text{H}$), and tritium ($^3\text{H}$). Among these, protium is the most abundant isotope, not tritium. Tritium is relatively rare.

Upon reviewing all statements, the incorrect one is: "Hydrogen has three isotopes of which tritium is the most common." Therefore, the correct answer is this statement.

Which of the following statement about hydrogen is incorrect ?

The Correct Option is D

Solution and Explanation

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