![]() ![]() The central atom is the one that has the highest bonding capacity it is the atom that is the shortest of the octet. Next, we shall figure out the central atom to which the rest of the atoms shall be bonded. The number of valence electrons is therefore 7, and hence Cl needs 1 more to achieve the octet. K shell has 2 electrons, L shell has 8, and M shell has 7 electrons. Similarly, the atomic number of hydrogen is 1 thus, each H has 1 electron and needs 1 more to achieve the duplet. To achieve the octet, carbon needs 4 more electrons. Thus, the number of valence electrons is 4. There are 2 electrons in its K shell and 4 electrons in the L shell. The atomic number of carbon is 6 therefore, it possesses 6 electrons in its neutral form. We shall start by calculating the number of valence electrons in each atom of CH2Cl2 in order to see how short an atom is from an octet (or duplet in the case of hydrogen). Let us take a look at the chemical bonding represented by Lewis structure in CH2Cl2. Hydrogen, however, does tend towards a duplet, not octet, because it has only one electron in its K shell, and thus needs only one more to achieve the maximum capacity of the K shell. Please note that several atoms follow the octet rule, i.e., they tend to achieve eight electrons in their valence shell through chemical bonding this is reflected in the Lewis structure of the molecule. The structures drawn using this theory are termed Lewis (dot) structures. The purpose of this theory is to help visualize the chemical bonding of atoms in molecules.Įlectrons are represented as dots, and each pair of bonding electrons between two atoms is shown as a line. The Lewis theory of chemical bonding-although quite primitive and the most limited theory on electronic structure-does help one to determine how valence electrons are arranged around the constituent atoms in a molecule. ![]()
0 Comments
Leave a Reply. |
AuthorWrite something about yourself. No need to be fancy, just an overview. ArchivesCategories |