Question

which of the following elements has the electron configuration of 3s²3p⁴ in its outermost shell?
al
cl
s
si
none of the above

Explanation:

• For Al (Aluminum), the electron configuration of the outermost shell is \(3s^{2}3p^{1}\).
• For Cl (Chlorine), the electron configuration of the outermost shell is \(3s^{2}3p^{5}\).
• For S (Sulfur), the electron configuration of the outermost shell is \(3s^{2}3p^{4}\).
• For Si (Silicon), the electron configuration of the outermost shell is \(3s^{2}3p^{2}\).

Answer:

C. S