Question

Which of the following elements has three shells with no shells having even number of outer electrons?

• A. Mg
• B. Si
• C. S
• D. None of the above

Answer 1

The correct option is D None of the above

The electronic configuration of Mg is $2,8,2$. The electronic configuration of Si is $2,8,4$. The electronic configuration of S is $2,8,6$. Therefore, every option has even electrons in its outermost shell.