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We know that Bohr model can only define the atomic spectrum of single electron species.But during flame test,orange rays are emitted when calcium is heated.Our chemistry teacher taught its theory along the same lines of Bohr model(the d orbital electrons move from high energy level to low energy level...).But if calcium is an atom with 20 electrons,how can it be defined through bohr model?

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  • $\begingroup$ I am afraid you teacher is not teaching it right. He/she should not apply Bohr's model to calcium. $\endgroup$ – M. Farooq Nov 13 at 4:55
  • $\begingroup$ Then how do we describe the atomic spectrum of calcium? $\endgroup$ – Aritra Barua Nov 13 at 5:02
  • $\begingroup$ What grade are you in and what is the teacher explaining? I mean what is his exact explanation. Flame tests? $\endgroup$ – M. Farooq Nov 13 at 5:45
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    $\begingroup$ 10th,The jumping of electrons from a higher energy levels to a lower one,thus emitting wavelength of certain colour was the main theme of his explanation. $\endgroup$ – Aritra Barua Nov 13 at 5:59
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    $\begingroup$ The teacher is right saying that the underlying general fact in absorption and emission is the same, ie electron interacting with electromagnetic waves and switching or jumping between different quantisised energy levels, a grasp of which is provided by Bohr model. Or better their existence and the above processes together with the existence of atoms themselves drove towards that simplified but still valuable model. Basically a replica of Aritra Barua comment. $\endgroup$ – Alchimista Nov 13 at 8:42

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