Shreyans Bhansali · Ernest Z. · Ramith Hettiarachchi · Christopher P. · dwayne

The electron construction of chlorine is #1s^2 2s^2 2p^6 3s^2 3p^5# or #""3s^2 3p^5#.

You are watching: How many electrons are in an atom of chlorine

The #3s^2 3p^5# electrons room the outermost electrons, for this reason chlorine has actually seven valence electrons.

In a picture, the valence electrons space the ones in the outermost shell.

You can see in the diagram below that there are 7 electrons in the outermost circle. Additionally, a an ext basic method of determining the number of valence electrons would certainly be to merely look at what group Cl is in.

It is in group 17, which means it has actually 7 valence electrons.  Shivangi Mangotra
Oct 27, 2014

Chlorine has an atom number 17. Atom number is the number of protons current in the nucleus of one atom. Every the atom of an aspect have exact same atomic number. In every stable atom the number of electrons is same to the number of protons. Therefore, the variety of electrons is equal to the number of protons in one chlorine atom. This means, that the number of electrons current in an chlorine atom is 17.

The electronic configuration that chlorine atom is:-E.C - K together M 2 8 7Where k, l, ,m room the shells/orbits/ power levels of one chlorine atom.

Valence electrons room the variety of electrons current in the outermost shell of one atom. Now, the last shell of chlorine atom has 7 electron in it. Therefore, there space 7 valence electrons present in one chlorine atom.

Here, stable means that atom has not formed a ion yet.  Ernest Z. · mrpauller.weebly.com
Oct 27, 2014

Chlorine has actually seven valence electrons.

Chlorine has atomic number 17.

The atom number is the variety of protons current in the cell core of one atom.All the atom of an facet have exact same atomic number.

In every stable atom the number of electrons is equal to the variety of protons. Stable way that atom has not formed a ion yet.

Therefore, the number of electrons is same to the variety of protons in an chlorine atom.

This means, the the variety of electrons present in one chlorine atom is 17.

The power shells of one atom room in the stimulate K, L, M …

So the digital configuration of chlorine atom is: K, L, M = 2, 8, 7

Valence electrons room the number of electrons current in the outermost covering of one atom.

The last covering of a chlorine atom has actually 7 electron in it.

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Therefore, there are 7 valence electrons in an chlorine atom.

Here is a video which provides a quick conversation of how to recognize how countless valence electrons atoms of different facets have.Video from: Noel Pauller 