Why does cl have 7 valence electrons

Which is larger F or Cl? This can be explained by the following logic. Cl- would be the largest because it has the largest number of electrons, i. How many valence electrons does f have? How many core electrons does CL have? Why is the Valency of chlorine 1? The electronic configuration of chlorine can be written as 2, 8, 7. Therefore, valence electron in chlorine is 7 and it needs to gain 1 electron from the outermost orbit to attain octet.

Hence, the valency of chlorine is 1. How many valence electrons does sodium have? How many neutrons does CL have? Chemistry Electron Configuration Valence Electrons. Dec 23, Chlorine has 7 valence eletrons. Explanation: You know this by looking at the groups vertical of the periodic table. Related questions Why are valence electrons important? Chlorine has an atomic number Atomic number is the number of protons present in the nucleus of an atom. All the atoms of an element have same atomic number.

In every stable atom the number of electrons is equal to the number of protons. Therefore, the number of electrons is equal to the number of protons in an chlorine atom. This means, that the number of electrons present in an chlorine atom is The electronic configuration of chlorine atom is:- E.

Valence electrons are the number of electrons present in the outermost shell of an atom. Now, the last shell of chlorine atom has 7 electrons in it. Therefore, there are 7 valence electrons present in an chlorine atom. Chlorine has seven valence electrons. Chlorine has atomic number Therefore, the number of electrons is equal to the number of protons in an chlorine atom.

This means, that the number of electrons present in an chlorine atom is