Which One of the Following Is the Correct Electronic Configuration $1 s ^ { 2 } 2 s ^ { 2 } 2 p 63 s 1$

Multiple Choice

Which one of the following is the correct electronic configuration for the sodium atom, which has 11 electrons?

A) $1 s ^ { 2 } 2 s ^ { 2 } 2 p 63 s 1$
B) $1 s ^ { 1 } 2 s ^ { 2 } 2 p ^ { 6 } 2 s ^ { 2 }$
C) $1 s ^ { 2 } 2 s ^ { 1 } 3 p ^ { 6 } 2 s ^ { 2 }$
D) $1 s ^ { 1 } 2 s ^ { 2 } 3 p ^ { 6 } 2 s ^ { 2 }$
E) $1 s ^ { 2 } 2 s ^ { 2 } 2 p 63 s ^ { 2 }$