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NEET2020PhysicsAtomic PhysicsActual

For which one of the following, Bohr model is not valid?

Options

  1. ASingly ionised helium atom He +
  2. BDeuteron atom
  3. CSingly ionised neon atom Ne +
  4. DHydrogen atom

Correct answer

C. Singly ionised neon atom Ne +

Step-by-step solution

Bohr's model is valid only for the single electronic systems. Therefore, it will not be valid for a singly ionised neon atom as it has more electrons.

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