Chemical Bonding and Molecular Structure Class 11 Notes Chemistry Chapter 4

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Chemical Bond
The force that holds different atoms in a molecule is called chemical bond.

Octet Rule
Atoms of different elements take part in chemical combination in order to complete their octet or to attain the noble gas configuration.

Valence Electrons
It is the outermost shell electron which takes part in chemical combination.

Facts Stated by Kossel in Relation to Chemical Bonding

• In the periodic table, the highly electronegative halogens and the highly electro-positive alkali metals are separated by noble gases.
• Formation of an anion and cation by the halogens and alkali metals are formed by gain of electron and loss of electron respectively.
• Both the negative and positive ions acquire the noble gas configuration. 
The negative and positive ions are stabilized by electrostatic attraction Example,

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