Earlier, we have discussed the valency of many important elements. It is important for any science student to know the valency of these important elements since they are essential to understanding many important concepts of chemistry. So today we shall discuss How Many Valence Electrons Are There in Chlorine?
How Do You Find The Valency of Chlorine
The atomic number of chlorine is 17. Hence it has 2 electrons in its inner-most shell, 8 electrons in its second shell and 7 electrons electron in outer-most shell respectively. Since it has 7 electrons in its outer-most shell, it needs one more electron to achieve stability or the octet state. Since it needs to add another electron by combining with the atom of another element, it has got a valency of -1.
Valence Electron of Chlorine
The atomic number of chlorine is 17. Hence it has got 7 electrons in its outermost shell. Its valency can be found out by subtracting 7 from 8, i.e., -1.