Answer
424.2k+ views
Hint: Ene indicates an alkene group which confirms presence of one double bond and allene are organic compounds in which one central carbon atom has double bonds with adjacent carbon atoms.
Complete step by step answer:
- Allene refers to structural formula C=C=C
- Allene indicates presence of double bond, so structural formula of ALLENE is H2C=C=CH2
- The Hybridization of the Central Carbon atom in allene is sp. Hybridization of terminal carbon atoms is $s{{p}^{2}}$.
- The Electronic configuration of carbon atom in ground state is $1{{s}^{2}}2{{s}^{2}}2{{p}^{2}}$.
- Valency of carbon atoms is 4, so an electron from 2s is transferred to 2p as the energy level of 2s and 2p is -almost the same.
- The electronic configuration of carbon atoms in excited state is $1{{s}^{2}}2{{s}^{1}}2{{p}^{3}}$.
- As Energy level of 2s and 2p is almost same, so 2s orbital and one p orbital mix together to form two sp hybridized orbitals which overlap with orbitals of other atom to form sigma bonds and remaining 2p orbitals are unhybridized which overlap sidewise to form two pi bonds.
- For terminal carbon atoms, one 2s orbital and two 2p form three $s{{p}^{2}}$ orbitals and one p orbital remains unhybridized.
- A double bond has one sigma and one pi bond.
- As there are two double bonds between three carbon atoms in allene, there are two sigma bonds and two pi bonds between them.
So option C is correct.
Note: Single bond is sigma bond. Double bond has one sigma plus one pi bond. Triple bond has one sigma and two pi bonds. Allene is confused with Allyl which is having the structural formula H2C=CH-CH2R.
Allene is also known as Propadiene as prop indicates it has three carbons and Diene indicates two double bonds.
Complete step by step answer:
- Allene refers to structural formula C=C=C
- Allene indicates presence of double bond, so structural formula of ALLENE is H2C=C=CH2
- The Hybridization of the Central Carbon atom in allene is sp. Hybridization of terminal carbon atoms is $s{{p}^{2}}$.
- The Electronic configuration of carbon atom in ground state is $1{{s}^{2}}2{{s}^{2}}2{{p}^{2}}$.
- Valency of carbon atoms is 4, so an electron from 2s is transferred to 2p as the energy level of 2s and 2p is -almost the same.
- The electronic configuration of carbon atoms in excited state is $1{{s}^{2}}2{{s}^{1}}2{{p}^{3}}$.
- As Energy level of 2s and 2p is almost same, so 2s orbital and one p orbital mix together to form two sp hybridized orbitals which overlap with orbitals of other atom to form sigma bonds and remaining 2p orbitals are unhybridized which overlap sidewise to form two pi bonds.
- For terminal carbon atoms, one 2s orbital and two 2p form three $s{{p}^{2}}$ orbitals and one p orbital remains unhybridized.
- A double bond has one sigma and one pi bond.
- As there are two double bonds between three carbon atoms in allene, there are two sigma bonds and two pi bonds between them.
So option C is correct.
Note: Single bond is sigma bond. Double bond has one sigma plus one pi bond. Triple bond has one sigma and two pi bonds. Allene is confused with Allyl which is having the structural formula H2C=CH-CH2R.
Allene is also known as Propadiene as prop indicates it has three carbons and Diene indicates two double bonds.
![seo images](https://www.vedantu.com/question-sets/58d41e42-b44a-4a79-9b5c-3db87069a2758206106290327431131.png)
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)