Chemistry Atomic Structure DUHS 2023
PMDC Verified Question 33 of 95
Which of the following has only one orientation in space, in the magnetic field?
A
\( p \) orbital
B
\( s \) orbital
C
\( d \) orbital
D
\( f \) orbital
Tap any option to test your recall and reveal the step-by-step Propolis autopsy.

Propolis Cognitive Error Autopsy

Official Correct Choice:
Option B: \( s \) orbital
Concept: The spatial orientation of an orbital is determined by its magnetic quantum number (\( m \)). A purely spherical shape looks identical from every angle.

Formula: $$ \text{Orientations} = 2l + 1 $$

Solution:
  • The number of orientations depends on the azimuthal quantum number \( l \).
  • For an \( s \)-orbital, \( l = 0 \).
  • Applying the formula: \( 2(0) + 1 = 1 \).
  • The \( s \)-orbital is perfectly spherical, meaning it has only one possible orientation in 3D space, regardless of the magnetic field applied.


Why other options are incorrect: The \( p \)-orbital has 3 orientations. The \( d \)-orbital has 5 orientations. The \( f \)-orbital has 7 orientations.

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