Valency of chlorine: Chlorine has the atomic number

Valency of Chlorine Chlorine has the atomic number 17 (Z=17). Chlorine’s electronic configuration is written as 2, 8, 7. In the shells K, L, and M, 2, 8, 7 electrons are distributed. As a result, chlorine’s valence electron is 7, and it needs to gain one electron from the outermost orbit to reach octet. As a result, chlorine has a valency of 1. There are a total of seven valence electrons present in the outermost shell (valence shell) of the atom as the outer electronic configuration of chlorine atoms is n s 2 n p 5 . The electronic configuration of chlorine is 2, 8, 7 (1s 2 2s 2 2p 6 3s 2 3p 5) and is distributed in the shells K, L, M respectively. It needs to gain 1 electron from the outermost orbit to attain octet. Since chlorine has 7 electrons in its valence shell, and chlorine needs just one more electron to complete its octet, it exhibits a valency of 1, as it tends to gain one electron during chemical reactions. The electronic configuration of chlorine can be expressed as 1s2 2s2 2p6 3s2 3p5 Alternatively, using noble gas notation, it can be ...