[单选题]
A neutral atom has an electron confi rzeoetqrehs 5v 2m*h4r16:7x 6 es 2fmz3;bsjdh4 7e oq8v*gdguration of $1s^22s^22p^6$. If a neutral atom holds one additional electron, what is the ground state configuration?
A. $1s^22s^22p^63s^1$
B. $1s^22s^22p^7$
C. $1s^22s^32p^6$
D. none of the given answers
Post time 2024-1-22 00:52:27