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AP EAMCET2004ChemistryStructure of Atom

Which of the following elements has least number of electrons in its M shell ?

Options

  1. AK
  2. BMn
  3. CNi
  4. DSc

Correct answer

A. K

Step-by-step solution

₁₉ ~K =1 s^2, 2 s^2 2 p^6, 3 s^2 3 p^6, 4 s^1 Number of electrons in M shell (n=3)=8 .

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