Chemistry Atomic Structure SZABMU 2022
PMDC Verified Question 48 of 95
Principal quantum number is represented by the symbol:
A
\( m \)
B
\( s \)
C
\( n \)
D
\( l \)
Tap any option to test your recall and reveal the step-by-step Propolis autopsy.

Propolis Cognitive Error Autopsy

Official Correct Choice:
Option C: \( n \)
Concept: Quantum mechanics utilizes specific, universally accepted variables to denote the four quantum numbers.

Formula: None required.

Solution:
  • The principal quantum number, which denotes the main energy shell and distance from the nucleus, is represented by the letter \( n \).
  • The azimuthal (orbital shape) is \( l \).
  • The magnetic (spatial orientation) is \( m \).
  • The spin is \( s \).


Why other options are incorrect: They correspond to the other three quantum numbers.

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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