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What is the radius of the electron orbit in a ground-state hydrogen atom?
A1.2 x 10^-10 m
B2.2 x 10^-11 m
C5.3 x 10^-11 m
D5.3 x 10^-15 m
Answer & Solution
Correct answer: C. 5.3 x 10^-11 m
Setting the total energy to -13.6 eV gives an orbital radius of 5.3 x 10^-11 m, the Bohr radius.
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