Which hydrogen-like species has an orbital radius equal to the first Bohr orbit of hydrogen?

Verified Answer & Explanation⌄

Correct Answer: D) Be³⁺ at n = 2

Concept Explanation

For a hydrogen-like species: rₙ = a₀(n²/Z) For Be³⁺: n = 2, Z = 4 r = a₀(2²/4) = a₀ Therefore, it has the same radius as the first Bohr orbit of hydrogen.

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