What is the ground-state electron configuration of a neutral atom of chloride?

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What is the ground-state electron configuration of a neutral atom of chloride?

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Answer 1 · 2018-03-29T13:25:22

$1 s^{2} 2 s^{2} 2 p^{6} 3 s^{2} 3 p^{5}$ $1s^2 2s^2 2p^6 3s^2 3p^5$

Explanation:

The ground state configuration of the neutral chlorine atom is $1 s^{2} 2 s^{2} 2 p^{6} 3 s^{2} 3 p^{5}$ $1s^2 2s^2 2p^6 3s^2 3p^5$

The ground state is the most stable energy state for the electrons of a given atom.

A neutral chlorine atom has 17 protons (atomic number 17) and 17 electrons.

The first two electrons are located in the $1 s$ $1s$ orbital.

In the second energy level, two electrons are located in the $2 s$ $2s$ orbital, and six electrons in the three $2 p$ $2p$ sub-orbitals. ( $p_{x}, p_{y}, p_{z}$ $p_x, p_y,p_z$ ).

The last 7 electrons, the outermost electrons with the highest energy levels, are located in the third energy level.

Two electrons are found in the $3 s$ $3s$ orbital and the last five electrons in the $3 p$ $3p$ sub-orbitals.

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What is the ground-state electron configuration of a neutral atom of chloride?

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