Answer
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Hint: You can start the solution of this question by describing how the octet rule or octet configuration come into existence and then you can define the octet configuration, followed by the limitations and by giving specific examples to explain it better.
Complete step by step solution:
According to the octet configuration as the name suggests Oct means eight the atom has eight electrons in the outermost orbit.
In the year 1904, Richard Abegg proposed the concept of coordination number and said that the atoms behave as donors or acceptors of electrons. The octet rule uses this idea and states that every atom binds with another atom to have eight electrons in its outermost shell.
The octet rule is able to explain the formation of a number of compounds and also able to explain the stability of the compound. Let’s consider an example of carbon dioxide.
As we can see from the above structure that the carbon “C” and both the oxygen “O” have 8electrons in their outermost shell which make them stable.
Additional information:
Limitations of octet rule:
As hydrogen and helium both have only one and two electrons respectively in their outermost shell it is impossible for them to have eight electrons in their outermost shell. So there are many compounds which have less than eight electrons in their outermost shell but are still stable. Similarly, there are many compounds which have more than eight electrons in their outermost shell but are still stable.
Note: The octet rule is based on the concept that electronic configuration of the noble gases are most stable and they have eight electrons in their outermost orbital so every element should attain the similar electronic configuration to become stable.
Complete step by step solution:
According to the octet configuration as the name suggests Oct means eight the atom has eight electrons in the outermost orbit.
In the year 1904, Richard Abegg proposed the concept of coordination number and said that the atoms behave as donors or acceptors of electrons. The octet rule uses this idea and states that every atom binds with another atom to have eight electrons in its outermost shell.
The octet rule is able to explain the formation of a number of compounds and also able to explain the stability of the compound. Let’s consider an example of carbon dioxide.
![seo images](https://www.vedantu.com/question-sets/ff5fbbc6-5378-4409-bf4d-196f6f628bad3325002155541144882.png)
As we can see from the above structure that the carbon “C” and both the oxygen “O” have 8electrons in their outermost shell which make them stable.
Additional information:
Limitations of octet rule:
As hydrogen and helium both have only one and two electrons respectively in their outermost shell it is impossible for them to have eight electrons in their outermost shell. So there are many compounds which have less than eight electrons in their outermost shell but are still stable. Similarly, there are many compounds which have more than eight electrons in their outermost shell but are still stable.
Note: The octet rule is based on the concept that electronic configuration of the noble gases are most stable and they have eight electrons in their outermost orbital so every element should attain the similar electronic configuration to become stable.
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