Question

what is the correct noble - gas notation for the electron configuration of an atom of chlorine? * (0.5 points) a. ar3s^2 3p^5 b. ne3s^2 3p^4 c. ar3s^2 3p^4 d. ne3s^2 3p^5

Explanation:

Chlorine has 17 electrons. Neon (Ne) has 10 electrons. The remaining 7 electrons for chlorine are filled in the 3s and 3p orbitals as $3s^{2}3p^{5}$. So the noble - gas notation is $[Ne]3s^{2}3p^{5}$.

Answer:

D. $[Ne]3s^{2}3p^{5}$