【】How Many Valence Electrons Does chlorine Have?||number of valence electrons in chlorine

How Many Valence Electrons Does chlorine Have?

Answer:

Chlorine has seven valence electrons.


Explanation:

Now I am going to show you how many  valence electrons  chlorine have in just 5 steps.

             Step-1:

First, find the atomic number of chlorine from periodic table.

From periodic table ,we see that the atomic number of chlorine is 17.

                 Step-2:

We know that the atomic number of chlorine is 17.So chlorine has 17 protons and 17 electrons as the charge of electrons and protons are equal but opposite in nature.The charge of proton is +1 and the charge of electron is -1.


                Step-3:

Now write the electron configuration of  chlorine.

Cl(17)=1s²2s²2p⁶3s²3p⁵

                Step-4:

Cl(17)=1s²2s²2p⁶3s²3p⁵

Now we will find out valence shell of chlorine from the electronic configuration of chlorine.

Cl(17)=1s²2s²2p⁶3s²3p⁵

Valence shell can be found from the highest number of principal quantum number.You know that principal quantum number is expressed by n.

Cl(17)=1s²2s²2p⁶3s²3p⁵

Here the highest value of n is 3.SoThe valence shell of chlorine is 3s²3p⁵.

                 Step-5

In this step,we will find out the valence electrons of chlorine.We have to know that the electrons of valence shell are called valence electrons. 


Cl(17)=1s²2s²2p⁶3s²3p⁵

From the above electron configuration of chlorine,we see that chlorine has 7 valence electrons in its valence shell.

So there are 7 valence electrons of chlorine.


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