What is the ground-state electron configuration of neon ($Ne$, atomic number $10$)?

• A. $1^s$ is not valid notation; correct configuration is $1^s$
• B. ${1s}^2{2s}^2{3p}^6$
• C. ${1s}^2{2s}^2{2p}^6$
• D. ${1s}^2{2s}^2{2p}^5$

Answer: (C)