In these bonds electrons are contributed by both. By sharing of electrons: The bond which is formed by the equal sharing of electrons between one or two atoms is called covalent bond. By the transfer of electrons: The chemical bond which formed by the complete transfer of one or more electrons from one atom to another is termed as electrovalent bond or ionic bond. The negative and positive ions are stabilized by electrostatic attraction Example, Both the negative and positive ions acquire the noble gas configuration. Formation of an anion and cation by the halogens and alkali metals are formed by gain of electron and loss of electron respectively. In the periodic table, the highly electronegative halogens and the highly electro-positive alkali metals are separated by noble gases. Facts Stated by Kossel in Relation to Chemical Bonding.It is the outermost shell electron which takes part in chemical combination. The force that holds different atoms in a molecule is called chemical bond.Ītoms of different elements take part in chemical combination in order to complete their octet or to attain the noble gas configuration. Lakhmir Singh Science Class 8 SolutionsĬhemical Bonding and Molecular Structure Class 11 Notes Chemistry Chapter 4.PS Verma and VK Agarwal Biology Class 9 Solutions.NCERT Solutions for Class 9 Foundation of IT.
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