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The radius of first orbit of H-atoms is 0.529 Å. The radius of first orbit of D-atoms should beAtomic Structure Chemistry Question

Question

The radius of first orbit of H-atoms is 0.529 Å. The radius of first orbit of D-atoms should be

Answer: B

💡 Solution & Explanation

The Bohr radius is inversely proportional to the reduced mass of the system. The reduced mass of deuterium (D) is slightly greater than that of hydrogen (H). Consequently, its radius will be slightly less than 0.529 Å. Therefore, correct answer is B.

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