How many valence electrons are in a chlorine atom?

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. read more

Chlorine has 7 valence electrons .The electron configuration of chlorine is 1s^2 2s^2 2p^6 3s^2 3p^5 or "[Ne]"3s^2 3p^5. The 3s^2 3p^5 electrons are the outermost electrons, so chlorine has seven valence electrons. In a picture, the valence electrons are the ones in the outermost shell. read more

Valence electrons by definition are the number of electrons in the valence shell. The atomic number of Chlorine is 17. Hence the configuration of electrons would be 2,8,7. Hence the number of valence electrons in Chlorine is 7. However if you talk about valency that would be number of electrons an atom has to gain/loose to achieve the stable state. read more

There are 7 valence electrons in a chlorine atom. The atomic number of chlorine is 17, which means it has an electron configuration of 2,8,7. This shows it has 3 shells of electrons, with 7 in the outer level. read more