Question

Statement-1: Both sodium and hydrogen have outer electronic configuration $n{s}^1$ but hydrogen is less reactive than sodium.
Statement-2: Hydrogen has greater ionisation energy.

• A. Statement-1 is true, Statement-2 is true; Statement-2 is a correct explanation for Statement-1
• B. Statement-1 is true, Statement-2 is True; Statement-2 is not a correct explanation for Statement-1
• C. Statement-1 is true, Statement-2 is false
• D. Statement-1 is false, Statement-2 is true

Answer 1

Answer: (A)

Both sodium and hydrogen is having same outer electronic configuration $n{s}^1$ but hydrogen have less reactivity because the ionization potential of $Na$ is less. Hence, it can loose its electron easily and participates in chemical reaction easily, so reason is the correct explanation for assertion so option A would be correct.