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JEE Main201910 Apr 2019Morning ShiftChemistryStructure of AtomActual

The graph between ψ 2 and r (radical distance) is shown below. This represents:

Options

  1. A3 s orbital
  2. B2 p orbital
  3. C2 s orbital
  4. D1 s orbital

Correct answer

C. 2 s orbital

Step-by-step solution

This graph shows one radial node Formula of radial node = n - l - 1 ; angular node = l ; total node = n - 1 n = Principal quantum number l = Azimuthal quantum number Radial nodes: for 1 s = n - l - 1 = 1 - 0 - 1 = 0 for 2 s = 2 - 0 - 1 = 1 for 2 p = 2 - 1 - 1 = 0 for 3 s = 3 - 0 - 1 = 2

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