which electron configuration matches this model?\n1s²2s²2p²\n1s²2s²2p³\n1s²2s²2p⁴\n1s²2s²2p⁵
which electron configuration matches this model?\n1s²2s²2p²\n1s²2s²2p³\n1s²2s²2p⁴\n1s²2s²2p⁵
Answer
Explanation:
Step1: Determine the number of electrons
The model shows an atom with 7 protons (P - 7) and 7 neutrons (N - 7). In a neutral atom, the number of electrons is equal to the number of protons. So, there are 7 electrons.
Step2: Write the electron - configuration
The electron - filling order is 1s, 2s, 2p. The 1s orbital can hold 2 electrons, the 2s orbital can hold 2 electrons, and the remaining electrons go into the 2p orbital. For 7 electrons, the electron - configuration is $1s^{2}2s^{2}2p^{3}$.
Answer:
$1s^{2}2s^{2}2p^{3}$