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Chemistry · Structure of atom

हिन्दी

What is the maximum number of electrons present in a principal shell with principal quantum number \( n \)?

  1. \( 2n^2 \)
  2. \( n^2 \)
  3. \( 2(2l+1) \)
  4. \( 2n+1 \)

Correct answer · Option 1

\( 2n^2 \)

Explanation

According to Pauli's principle and subshell capacities, the maximum number of electrons in a shell with principal quantum number \( n \) is equal to \( 2n^2 \).
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