Question

If the radius of \( H \) is 0.53 Å, then what will be the radius of \( Li^{2+} \)?

• A. 0.17 Å
• B. 0.36 Å
• C. 0.53 Å
• D. 0.59 Å

Hint:

The radius of ions decreases with the increase in nuclear charge.

Answer 1

The Correct Option is A

Step 1: Atomic size and charge.
The radius of an ion decreases with increasing positive charge. Since \( Li^{2+} \) has a higher charge than \( H \), its radius is smaller. Typically, the radius of \( Li^{2+} \) is 0.17 Å.
Thus, the correct answer is (1).