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) $1 s ^ { 2 } 2 s ^ { 2 } 2 p 63 s ^ { 2 }$

Question

Quizplus · Accepted Answer

The correct electronic configuration for sodium (Na), which has 11 electrons, is $1 s ^ { 2 } 2 s ^ { 2 } 2 p ^{6} 3 s ^ { 1 }$. This follows the Aufbau principle, filling the lowest energy levels first.

Which One of the Following Is the Correct Electronic Configuration 1s22s22p63s11 s ^ { 2 } 2 s ^ { 2 } 2 p 63 s 11s22s22p63s1

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