consider the model of the nitrogen atom. which electron - configuration matches this model? 1s²2s²2p²…

Explanation:

Step1: Determine number of electrons

Nitrogen has atomic number 7, so 7 electrons.

Step2: Analyze electron - shell filling

Electrons fill 1s first (2 electrons), then 2s (2 electrons), and then 2p. After filling 1s and 2s, we have 7 - 2 - 2=3 electrons left for 2p. So the electron - configuration is $1s^{2}2s^{2}2p^{3}$.

Answer:

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