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NDA 2 2024 GAT, question 113

Topic: Chemistry

Q113

What is the maximum number of electrons that can occupy the first shell of an atom ?

  1. (a) 22Correct answer
  2. (b) 44
  3. (c) 88
  4. (d) 1616

Solution.

Answer: (a) 22

  1. The maximum electron capacity of a shell is 2n².
  2. For the first shell n=1, this is 2 electrons.
  3. Its only subshell is 1s, with one orbital of capacity two.