alleryThe Bohr radius for hydrogen ($n=1, Z=1$) is approximately
A$0.0529\,Å$
B$0.529\,Å$
C$5.29\,Å$
D$52.9\,Å$
Answer & Solution
Correct answer: B. $0.529\,Å$
$a_0 = 0.529\,Å = 5.29 \times 10^{-11}\,m$.
The benchmark length scale of atomic chemistry — about the size of a hydrogen atom in its ground state.
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