Question:

If $ n $ is the principal quantum number, as per quantum mechanical model of atom, the maximum number of electrons possible in any energy level is limited to

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To find the maximum number of electrons in a shell, use \( 2n^2 \), where \( n \) is the principal quantum number.
Updated On: May 9, 2025
  • \( 2n \)
  • \( 2n^2 + 2 \)
  • \( 2n^2 - 2 \)
  • \( n^2 \)
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The Correct Option is D

Solution and Explanation

The maximum number of electrons that can occupy an energy level is given by \( 2n^2 \), where \( n \) is the principal quantum number. This is derived from the formula for the number of orbitals in each energy level.
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