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Atomic Structure Bohr Radius

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The radius of the first Bohr orbit of hydrogen is 0.53 Å. What is the radius of its third Bohr orbit?

Verified Answer & Explanation⌄

Correct Answer: D) 4.77 Å

Concept Explanation

For hydrogen: rₙ = n²r₁ r₃ = 3² × 0.53 = 9 × 0.53 = 4.77 Å.

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