Asked in PMC Practice Test 4 (2022) 2022Moderate

The maximum number of electrons that can be accommodated in M Shell of an atom are:

Correct answer: C. 18

  • A. 8
  • B. 32
  • C. 18
  • D. 25

Explanation

The maximum number of electron that can accommodate in a shell is given by the formula 2n2. For M shell n=3, hence M = 2(3)² so M = 2(9) = 18. So the M shell can have a maximum of 18 electrons thus, option C is correct.

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