Chemistry Atomic Structure NUMS 2024
PMDC Verified Question 19 of 95
The value of "\( l \)" for \( 4p \) orbital is:
A
\( 0 \)
B
\( 1 \)
C
\( 2 \)
D
\( 3 \)
Tap any option to test your recall and reveal the step-by-step Propolis autopsy.

Propolis Cognitive Error Autopsy

Official Correct Choice:
Option B: \( 1 \)
Concept: The letter designation of an orbital directly corresponds to a specific integer value of the azimuthal quantum number (\( l \)).

Formula: $$ s=0, p=1, d=2, f=3 $$

Solution:
  • The orbital given is "\( 4p \)".
  • The principal quantum number is the coefficient: \( n = 4 \).
  • The letter "\( p \)" universally represents an azimuthal quantum number of \( l = 1 \).
  • Therefore, the value of \( l \) is 1.


Why other options are incorrect: 0 is for an \( s \)-orbital. 2 is for a \( d \)-orbital. 3 is for an \( f \)-orbital.

Quality & Fidelity Assurance: Every question on BeambePrep is rigorously curated against the official PMDC syllabus with zero filler, zero out-of-syllabus content, and zero typos. When an authentic past paper originally contained a historical mistake or ambiguity from the examining board (such as UHS or NUMS), BeambePrep faithfully reflects the original paper while detailing the nuance and scientific consensus in the autopsy above.

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