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The angular momentum of an electron in Bohr's hydrogen atom whose energy is - 3.4 eV, is

Options

  1. A5 h 2 π
  2. Bh 2 π
  3. Ch π
  4. D2 h 3 π

Correct answer

C. h π

Step-by-step solution

The energy of an electron in nth orbit of a hydrogen atom is given by E n =   - 13.6 n 2   eV ⇒           3.4 = - 13.6 n 2 ⇒       n 2 = 4 ⇒       n = 2 The angular momentum of electron is given by L = n h 2 π = 2 h 2 π = h π

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