Question

the electron configuration of nitrogen (n) is
○ ( 1s^2 2s^2 2p^3 )
○ ( 1s^2 2s^2 2p^4 )
○ ( 1s^2 2s^2 2p^5 )
○ ( 1s^2 2s^2 2p^6 )

Explanation:

Nitrogen has an atomic number of 7, meaning it has 7 electrons. The electron configuration follows the Aufbau principle. The $1s$ orbital holds 2 electrons, $2s$ holds 2, and the $2p$ orbital will hold the remaining $7 - 2 - 2 = 3$ electrons. So the electron configuration is $1s^{2}2s^{2}2p^{3}$.

Answer:

A. $1s^{2}2s^{2}2p^{3}$