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Atoms — Physics STD 12 Science — Question

Gujarat BoardEnglish MediumSTD 12 SciencePhysicsAtoms1 Mark
MCQ
For the ground state, the electron in the H-atom has an angular momentum = h, according to the simple Bohr model. Angular momentum is a vector and hence there will be infinitely many orbits with the vector pointing in all possible directions. In actuality, this is not true,
  • A
    Because Bohr model gives incorrect values of angular momentum.
  • B
    Because only one of these would have a minimum energy.
  • C
    Angular momentum must be in the direction of spin of electron.
  • D
    Because electrons go around only in horizontal orbits.
✓

Answer

  1. Because Bohr model gives incorrect values of angular momentum.

Solution:

Using simple Bohr model, we get the only magnitude of the angular momentum of revolving electrons. But, angular momentum is vector quantity, so, statement (a) is not correct.

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