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

Explanation:

Step1: Determine number of electrons

Nitrogen has 7 protons (P - 7). In a neutral atom, number of electrons = number of protons. So, nitrogen has 7 electrons.

Step2: Write electron - configuration rules

Electrons fill orbitals in the order 1s, 2s, 2p etc. The 1s orbital can hold 2 electrons, the 2s orbital can hold 2 electrons, and the 2p orbital can hold 6 electrons.

Step3: Distribute electrons

For nitrogen with 7 electrons, 2 electrons go in 1s ($1s^{2}$), 2 electrons go in 2s ($2s^{2}$), and the remaining 3 electrons go in 2p ($2p^{3}$). So the electron - configuration is $1s^{2}2s^{2}2p^{3}$.

Answer:

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