Question

The ratio of the difference between the radii of \( 3^{rd} \) and \( 4^{th} \) orbits of the \( He^+ \) and those of \( Li^{2+} \) is:

• A. \( 2 : 3 \)
• B. \( 3 : 1 \)
• C. \( 1 : 3 \)
• D. \( 3 : 2 \)

Hint:

For hydrogen-like species, radius varies as \( \frac{n^2}{Z} \)Always compare orbit differences carefully using same formula.

Answer 1

The Correct Option is D