Moderate

The radius of an electron orbit in a hydrogen atom is of the order of

Correct answer: C. 1 x 10^-11 m

  • A. 1 x 10^-8 m
  • B. 1 x 10^-1 m
  • C. 1 x 10^-11 m
  • D. 1 x 10^-13 m

Explanation

The first electron shell radius for hydrogen is 0.53Ao = 5.3 x10-11m. The radii for the remaining shells also range from between 10-11m to 10-10m.

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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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