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This video will discuss covalent bond.
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It is a type of chemical bond which is formed after the sharing of electrons between two or more atoms.
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The compounds that are formed after covalent bonding, they are stable because the atoms of this compound, they have attained stable configuration.
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Or we can say stable electronic configuration.
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Stable electron configuration or stable configuration is attained when the atomic shells of an atom are completely filled with the electrons.
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For example, the first shell contains two electrons, the second contains eight, and third contains eight.
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This is the first cell close to the nucleus.
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This is the second shell and this is the third shell.
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These are the number of electrons.
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The first shell can accommodate two electrons.
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Second cell can accommodate 8 electrons and so do the third one.
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If an atom contains 2, 8, 7 and another atom contains 2 ,7 electronic configuration, that means they are available for one electron in their outermost shell.
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Hence they both can accept one electron.
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In their outermost shell and can form covalent bond with the atom which is sharing or giving the electrons to these atoms.
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Atoms with stable electronic configuration will not bother to share their electrons because they are in their stable configuration with minimum energy...