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2. structure of atom — Chemistry STD 11 Science — Question

Gujarat BoardEnglish MediumSTD 11 ScienceChemistry2. structure of atom1 Mark
MCQ
The orbital diagram in which the Aufbau's principle is violated is

$2s$     $2{p_x}$     $2{p_y}$     $2{p_z}$

  • A
    $ \uparrow \downarrow $     $ \uparrow \downarrow $     $ \uparrow $
  • ✓
    $ \uparrow $     $ \uparrow \downarrow $      $ \uparrow $      $ \uparrow $
  • C
    $ \uparrow \downarrow $      $ \uparrow $       $ \uparrow $      $ \uparrow $
  • D
    $ \uparrow \downarrow $     $ \uparrow \downarrow $     $ \uparrow \downarrow $     $ \uparrow $
✓

Answer

Correct option: B.
$ \uparrow $     $ \uparrow \downarrow $      $ \uparrow $      $ \uparrow $
b
(b) According to Aufbau principle the orbitals of lower energy $(2s)$ should be fully filled before the filling of orbital of higher energy starts.

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