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प्रश्न
Draw a sketch of Bohr’s model of an atom with three shells.
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उत्तर
According to Bohr's atomic model with three orbitals, the order of the three orbitals will be K, L and M
The number of electrons in each orbit = 2n2
Number of electrons in K orbit = 2 × 12 = 2
Number of electrons in L orbit = 2 × 22 = 8
Number of electrons in M orbit = 2 × 32 = 18
But the maximum number of electrons in the outer orbit can be 8.

संबंधित प्रश्न
Describe Bohr’s model of the atom.
Compare all the proposed models of an atom given in this chapter.
Give the postulates of Bohr's atomic model
State in brief the drawbacks of Rutherford's atomic model correlating them with the postulates of Bohr’s atomic model.
State true or false. If false, correct the statement.
Smaller the size of the orbit, lower is the energy of the orbit.
Which of the following in Fig. 4.2 do not represent Bohr’s model of an atom correctly?

What are the Limitations of Bohr’s Model?
The atomic model based on quantum theory was first proposed by ______.
Given below are two statements:
Statement I: Atoms are electrically neutral as they contain equal number of positive and negative charges.
Statement II: Atoms of each element are stable and emit their characteristic spectrum.
In the light of the above statements, choose the most appropriate answer from the options given below:
A particle of mass ‘m’ and charge ‘−2q’ is moving around a very heavy particle having charge ‘q’. If Bohr’s model is to be used then the orbital velocity of mass ‘m’ when it is nearest to the heavy particle is (in magnitude) (ε0 = permittivity of free space, h = Planck’s constant) ______.
