The radius of an electron orbit in a hydrogen atom is of the order _.
Correct answer: C. 10-11 m
- A. 10-8 m
- B. 10-1 m
- C. 10-11 m
- D. 10-13 m
Explanation
The radius of an electron orbit in a hydrogen atom, as estimated by the Bohr model, is approximately 0.529 angstroms. Since 1 angstrom is equal to 10-10 m, the radius in meters would be: r = 0.529 × 10-10 = 5.29 x 10-11 m Therefore, the radius of an electron orbit in a hydrogen atom is of the order of 10-11 m. Hence, C is the correct option. .
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About Spectrum of Hydrogen
The hydrogen spectrum consists of discrete emission lines produced when electrons fall between quantised energy levels and release photons. Questions use the Rydberg equation, photon energy and wavelength, and identify the Lyman, Balmer, Paschen, Brackett and Pfund series, which differ from continuous spectra.
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