🔴 Covalent Bond and its Types 🔴 Lewis Structure 🔴 Chemistry for Class 11 in HINDI

In this Chemistry video in Hindi we explained covalent bond and its types. Basically, covalent bond can be divided into two categories, viz, single covalent bond and multiple covalent bond. The multiple bond can be subdivided into two categories, viz, double covalent bond and triple covalent bond.

Single covalent bond : The bond between two atoms when each atom shares one electron each. One example of single covalent bond is fluorine molecule.
Double covalent bond : The bond between two atoms when each atom shares two electrons each. One example of double covalent bond is oxygen molecule.
Triple covalent bond : The bond between two atoms when each atom shares three electrons each. One example of triple covalent bond is nitrogen molecule.

Langmuir (1919) refined the Lewis postulations by abandoning the idea of the stationary cubical arrangement of the octet, and by introducing the term covalent bond. The Lewis-Langmuir theory can be understood by considering the formation of the chlorine molecule,Cl2. The Cl atom with electronic configuration, [Ne]3s2 3p5, is one electron short of the argon configuration. The formation of the Cl2 molecule can be understood in terms of the sharing of a pair of electrons between the two chlorine atoms, each chlorine atom contributing one electron to the shared pair. In the process both chlorine atoms attain the outer shell octet of the nearest noble gas (i.e., argon).

The important conditions for covalent bond formation are :
• Each bond is formed as a result of sharing of an electron pair between the atoms.
• Each combining atom contributes at least one electron to the shared pair.
• The combining atoms attain the outershell noble gas configurations as a result of the sharing of electrons.

Class 11
Chemistry
Chapter 4 : Chemical Bonding and Molecular Structure

🔴 Click here for the full Playlist of this Chapter :
https://www.youtube.com/watch?v=0m-1NVUiT9s&list=PLW0F47OesfFMjYr4uG4qcb1dp9nuaZ9OL

Previous video :
🔴 Kossel - Lewis Approach to Chemical Bonding
https://www.youtube.com/watch?v=ICIhUoesOdI

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