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NEET 2026
Exam
NEET
Year
2026
Subject
Chemistry
Chapter
Chapter

NEET 2026 · Chemistry · Chapter

Let x be the maximum number of electrons that can be accommodated...

Let xx be the maximum number of electrons that can be accommodated in a particular subshell. Which of the following expressions correctly defines the azimuthal quantum number (ll) for this subshell in terms of xx?

Options

  1. Al=x−12l = \dfrac{x - 1}{2}
  2. Bl=x−24l = \dfrac{x - 2}{4}
  3. Cl=x+24l = \dfrac{x + 2}{4}
  4. Dl=4x+2l = 4x + 2

Correct answer

B. l=x−24l = \dfrac{x - 2}{4}

Step-by-step solution

The maximum number of electrons xx that can be accommodated in a subshell with azimuthal quantum number ll is given by the formula:

x=2(2l+1)x = 2(2l + 1)

Expanding the expression:

x=4l+2x = 4l + 2

Rearranging to solve for ll:

4l=x−24l = x - 2

l=x−24l = \dfrac{x - 2}{4}

Answer: l=x−24l = \dfrac{x - 2}{4}
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