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MHT CET202123 Sep 2021Evening ShiftChemistryStructure of AtomActual

The energy of an electron in the excited hydrogen atom is -3.4 eV . Then according to Bohr's theory, the angular momentum of the electron in that excited state is ( h= Plank's constant )

Options

  1. A2 h
  2. Bn h 2
  3. Ch
  4. D3 h 2

Correct answer

C. h

Step-by-step solution

The energy in ground state ( n =1) is -13.6 eV The energy in n =2 state is -13.6 4 =-3.4 eV Angular momentum = n h 2 = 2 h 2 = h

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