Practice portal › Atoms › Bohr Model of the Hydrogen Atom
Asked in GUJCET 2009 · Postulates, radius, speed and angular momentum
Idea: the orbit area is A=π r², and in the Bohr model r∝ n², so A∝ n⁴.
First excited state: n=2; ground state: n=1.
(r₂)/(r₁)=(2²)/(1²)=4.
(A₂)/(A₁)=((r₂)/(r₁))²=4²=16.
So the ratio is 16:1.
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