Moderate

Bohr's theory cannot be applied on:

Correct answer: B. H+

  • A. H
  • B. H+
  • C. He+1
  • D. Li+2

Explanation

Bohr's theory is only applicable to hydrogen-like species containing one electron only. As H, He1+ and Li2+ all have one electron each, hence Bohr's theory is applicable on them. But H+ has 0 electrons and that is the reason Bohr's theory is not appliable on it.

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