JEE Main 2026 Chemistry question
The species having identical radii according to the Bohr's theory are: A. H (first orbit) B. He⁺ (first orbit) C. He⁺ (Second orbit) D. Li²⁺ (first orbit) E. Be³⁺ (Second orbit) Choose the correct answer from the options given below:
Answer: (B)
Solution
r ∝ n²/Z. A: 1²/1=1. B: 1²/2=0.5. C: 2²/2=2. D: 1²/3=1/3. E: 2²/4=1. A and E both equal 1.