Answer
424.2k+ views
Hint: Octet means electronic configuration of valence orbital having eight electrons. The elements that have lower atomic number cannot complete their octet while forming hydrides.
Complete step by step answer:
Octet rule states that the atoms combine to form compound in such a way that both contain 8 electrons in their valence shell- So, many elements like Sodium, Lithium, Beryllium makes hydrides and that are NaH, LiH and \[Be{{H}_{2}}\] respectively.
- We can see that NaH, sodium loses one electron and gains the complete octet state while hydrogen also completes its valence orbital.
- In LiH, lithium loses one electron and hydrogen gains one electron to complete their valence orbit which has 2 electrons each but Li ion here cannot fulfill its octet here because it only has two electrons. Actually the Lithium atom here has a filled valence shell but it consists of only two electrons. So, we can say that it does not have octet structure.
- In \[Be{{H}_{2}}\], Beryllium loses two electrons and gains a stable state containing a fully filled valence shell, the same case is here with hydrogen atoms also. Here also Beryllium ion has only two electrons in its valence shell. So we can say that it does not have octet structure.
So, we can conclude that both Lithium and Beryllium will form hydrides in which they will have incomplete octets .
Note: Note that octet rule does not apply to the elements that are of d-block or f-block because they have or need more than 8 electrons in order to complete their octet. In octet, only electrons of valence shells are counted.
Complete step by step answer:
Octet rule states that the atoms combine to form compound in such a way that both contain 8 electrons in their valence shell- So, many elements like Sodium, Lithium, Beryllium makes hydrides and that are NaH, LiH and \[Be{{H}_{2}}\] respectively.
- We can see that NaH, sodium loses one electron and gains the complete octet state while hydrogen also completes its valence orbital.
- In LiH, lithium loses one electron and hydrogen gains one electron to complete their valence orbit which has 2 electrons each but Li ion here cannot fulfill its octet here because it only has two electrons. Actually the Lithium atom here has a filled valence shell but it consists of only two electrons. So, we can say that it does not have octet structure.
- In \[Be{{H}_{2}}\], Beryllium loses two electrons and gains a stable state containing a fully filled valence shell, the same case is here with hydrogen atoms also. Here also Beryllium ion has only two electrons in its valence shell. So we can say that it does not have octet structure.
So, we can conclude that both Lithium and Beryllium will form hydrides in which they will have incomplete octets .
Note: Note that octet rule does not apply to the elements that are of d-block or f-block because they have or need more than 8 electrons in order to complete their octet. In octet, only electrons of valence shells are counted.
Recently Updated Pages
How many sigma and pi bonds are present in HCequiv class 11 chemistry CBSE
![arrow-right](/cdn/images/seo-templates/arrow-right.png)
Why Are Noble Gases NonReactive class 11 chemistry CBSE
![arrow-right](/cdn/images/seo-templates/arrow-right.png)
Let X and Y be the sets of all positive divisors of class 11 maths CBSE
![arrow-right](/cdn/images/seo-templates/arrow-right.png)
Let x and y be 2 real numbers which satisfy the equations class 11 maths CBSE
![arrow-right](/cdn/images/seo-templates/arrow-right.png)
Let x 4log 2sqrt 9k 1 + 7 and y dfrac132log 2sqrt5 class 11 maths CBSE
![arrow-right](/cdn/images/seo-templates/arrow-right.png)
Let x22ax+b20 and x22bx+a20 be two equations Then the class 11 maths CBSE
![arrow-right](/cdn/images/seo-templates/arrow-right.png)
Trending doubts
Fill the blanks with the suitable prepositions 1 The class 9 english CBSE
![arrow-right](/cdn/images/seo-templates/arrow-right.png)
At which age domestication of animals started A Neolithic class 11 social science CBSE
![arrow-right](/cdn/images/seo-templates/arrow-right.png)
Which are the Top 10 Largest Countries of the World?
![arrow-right](/cdn/images/seo-templates/arrow-right.png)
Give 10 examples for herbs , shrubs , climbers , creepers
![arrow-right](/cdn/images/seo-templates/arrow-right.png)
Difference between Prokaryotic cell and Eukaryotic class 11 biology CBSE
![arrow-right](/cdn/images/seo-templates/arrow-right.png)
Difference Between Plant Cell and Animal Cell
![arrow-right](/cdn/images/seo-templates/arrow-right.png)
Write a letter to the principal requesting him to grant class 10 english CBSE
![arrow-right](/cdn/images/seo-templates/arrow-right.png)
Change the following sentences into negative and interrogative class 10 english CBSE
![arrow-right](/cdn/images/seo-templates/arrow-right.png)
Fill in the blanks A 1 lakh ten thousand B 1 million class 9 maths CBSE
![arrow-right](/cdn/images/seo-templates/arrow-right.png)