# How Many Valence Electrons Does Chlorine Have

Chlorine contains 7 electrons in its outer shell out of total of 17 electrons, thus it has 7 valence electrons. The electronic configuration of Chlorine is 2, 8, 7.

The Valence Electrons are a type of outer shell electron. Which can participate in the formation of a chemical bond and attach to an atom even if the outer shell is not closed. It also contributes to …

The valence electron of an element can be determined as the no. of electrons present in its outermost shell. It can be easily counted by knowing the group that an element belongs to….

seven valence electrons

### Step-1: Determining the total number of electrons in chlorine

1st we need to know the total number of electrons in the chlorine atom. To know the number of electrons, you need to know the number of protons in chlorine. And to know the number of protons, you need to know the atomic number of the chlorine element.

To know the atomic number we need to take the help of a periodic table. It is necessary to know the atomic number of chlorine elements from the periodic table. The atomic number is the number of protons. And electrons equal to protons are located outside the nucleus.

That is, we can finally say that there are electrons equal to the atomic number in the chlorine atom. From the periodic table, we see that the atomic number of chlorine is 17. That is, the chlorine atom has a total of seventeen electrons.

## How do you calculate the number of valence electrons in a chlorine atom?

The valence electrons have to be determined by following a few steps. The electron configuration is one of them. It is not possible to determine the valence electron without electron configuration. Knowing the electron configuration in the right way, it is very easy to determine the valence electrons of all the elements.

However, valence electrons can be easily identified by arranging electrons according to the Bohr principle. Now we will learn how to determine the valence electron of chlorine.

### Step-2: Need to do electron configuration of chlorine

Step 2 is very important. In this step, the electrons of chlorine have to be arranged. The electron configuration of chlorine shows that there are two electrons in the K shell, eight in the L shell, and seven in the M shell.

That is, the first shell of chlorine has two electrons, the second shell has eight electrons and the 3rd shell has seven electrons.

## FAQ

Why does chlorine have 7 valence electrons?

The energy shells of an atom are in the order K, L, M … Valence electrons are the number of electrons present in the outermost shell of an atom. The last shell of a chlorine atom has 7 electrons in it. Therefore, there are 7 valence electrons in an chlorine atom.

Does chlorine have 3 valence electrons?

The total number of electrons in a valence shell is called valence electrons. The electron configuration shows that the last shell of chlorine has seven electrons. Therefore, the valence electrons of chlorine are seven.

How do we know that chlorine has 7 valence electrons?

Why? Referring to the octet rule, atoms attempt to get a noble gas electron configuration, which is eight valence electrons. Sodium has one valence electron, so giving it up would result in the same electron configuration as neon. Chlorine has seven valence electrons, so if it takes one it will have eight (an octet).

How many valence electrons does chlorine Cl need to be stable?

Why? Referring to the octet rule, atoms attempt to get a noble gas electron configuration, which is eight valence electrons. Sodium has one valence electron, so giving it up would result in the same electron configuration as neon. Chlorine has seven valence electrons, so if it takes one it will have eight (an octet).