Moderate

Number of waves in third Bohr's orbit of hydrogen will be:

Correct answer: A. 3

  • A. 3
  • B. 6
  • C. 9
  • D. 12

Explanation

The number of waves in the third Bohr's orbit of hydrogen will be 3.The third Bohr's orbit of hydrogen has a principal quantum number of n=3. The number of waves in a circular orbit is equal to the circumference of the orbit divided by the wavelength of the wave.

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Atomic structure covers the discovery of the proton, Planck's quantum theory, hydrogen emission spectra and the evidence for quantized energy levels. You will use quantum numbers to describe orbitals, distinguish s, p, d and f orbital shapes, and write electronic configurations, including the correct order of electron filling.

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