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MHT CET202416 May 2024Evening ShiftPhysicsAtomic PhysicsActual

In the second orbit of hydrogen atom, the energy of an electron is ' E '. In the third orbit of helium atom, the energy of the electron will be (atomic number of helium =2 )

Options

  1. A4 E 9
  2. B4 E 3
  3. C16 E 9
  4. D16 E 3

Correct answer

C. 16 E 9

Step-by-step solution

aligned & E Z^2 n^2 E_H E_ H e & = (Z^2 )_H (n)_H^2 (n_ He )^2 (Z^2 )_ He & = 1 2^2 3^2 2^2 = 9 16 E_ H e & = 16 9 E_H= 16 9 E aligned

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