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Forum Question BankThe Bohr orbit radius for hydrogen atom (n = 1)…

EASYMCQ SINGLENEET ChemistryPhysical ChemistryAtomic StructureIntro

The Bohr orbit radius for hydrogen atom (n = 1) is 0.529 Å. The radius for the first excited state (n = 2) orbit is

0.0.13 Å

1.1.06 Å

2.4.77 Å

3.2.12 Å

Explanation

rₙ = 0.529 n²/Z Å. For n=2, Z=1: r₂ = 0.529 × 4 = 2.12 Å

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