EASYMCQ SINGLENEET ChemistryPhysical ChemistryAtomic StructureIntro
The value of a₀ (Bohr radius) in the expression for the radius of nth orbit of hydrogen atom (rₙ = n²a₀) is
0.5.27 pm
1.52.9 pm
2.529 pm
3.0.529 pm
Explanation
The Bohr radius a₀ = 52.9 pm = 0.529 Å = 0.529 × 10⁻¹⁰ m. This is the radius of the first orbit of hydrogen.
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