Polar and non polar covlent bond | ch#4 | 9th class chemistry

Polar and non polar covlent bond | ch#4 | 9th class chemistry #polarcovalentbond #nonpolarcovalentbond #mpluschemistry In this video lecture I have discussed about the following things If a covalent bond is formed between two similar atoms (homo-atoms), the shared pair of electrons is attracted by both the atoms equally. Such type of bond is called non-polar covalent bond. These bonds are formed by equal sharing of electron pair between the two bonding atoms. This type of bond is called a pure covalent bond. For example, bond formation in H and CI 2 2. If the covalent bond is formed between two different types of atoms (hetro atoms) then the bond pair of electrons will not be attracted equally by the bonded atoms. One of the atoms will attract the bond pair of electrons more strongly than the other one. This atom(element) will be called as more electronegative. If the difference of electronegativities between two elements is more than 1.7 the bond between them will be predominantly ionic bond and if it is less than 1.7, the bond between two atoms will be predominantly covalent.