Structure of the Atom · Class 9 · CBSE Science

The maximum number of electrons that can be accommodated in a shell is given by the formula 2n^2, where n is the orbit number. What is the maximum ca…

Practice question from Structure of the Atom (Class 9 · CBSE Science), with the correct answer and a step-by-step solution.

medium · MCQ · Q-927388

The maximum number of electrons that can be accommodated in a shell is given by the formula 2n22n^2, where nn is the orbit number. What is the maximum capacity of the M-shell (third shell)?

  1. A.2
  2. B.8
  3. C.18Correct answer
  4. D.32

Solution

For the M-shell, n=3n = 3. Using the formula 2n22n^2, the maximum capacity is 2×(3)2=2×9=182 \times (3)^2 = 2 \times 9 = 18 electrons.

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