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What is the total number of sigma and pi bonds in C2H4(Ethene) ??
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This video explains easy way of counting number of sigma & pi bonds in Ethene(C2H4) molecule.
Sigma bond
1. A type of covalent bond which is formed by axial overlap of s-s , s-p, and p-p orbitals.
2. Due to axial overlapping, it is strong
3. There is a free rotation around the sigma bond
4.The electron cloud is symmetrical.
pi bond
1. A type of covalent bond which is formed by sideway or lateral overlap of p-p orbitals.
2. Due to sideway overlapping, it is weak.
3. There is no free rotation around pi bond
4.The electron cloud is unsymmetrical & consists of two charged clouds one above and below the plane due to sideway overlap
EASY WAY FOR COUNTING SIGMA & PI BOND
Sigma bonds = Total number of atoms -1
Pi bonds = Total number of bonds - sigma bonds
In C2H4, there are total 6 atoms .
Hence
sigma bond =6-1
= 5
If we look at the structural formula of C2H4, we can see 6 bonds are present totally. Hence
pi bond. = 6-5
= 1
C2H4 has 5 sigma and 1 pi bonds.
Sigma bond
1. A type of covalent bond which is formed by axial overlap of s-s , s-p, and p-p orbitals.
2. Due to axial overlapping, it is strong
3. There is a free rotation around the sigma bond
4.The electron cloud is symmetrical.
pi bond
1. A type of covalent bond which is formed by sideway or lateral overlap of p-p orbitals.
2. Due to sideway overlapping, it is weak.
3. There is no free rotation around pi bond
4.The electron cloud is unsymmetrical & consists of two charged clouds one above and below the plane due to sideway overlap
EASY WAY FOR COUNTING SIGMA & PI BOND
Sigma bonds = Total number of atoms -1
Pi bonds = Total number of bonds - sigma bonds
In C2H4, there are total 6 atoms .
Hence
sigma bond =6-1
= 5
If we look at the structural formula of C2H4, we can see 6 bonds are present totally. Hence
pi bond. = 6-5
= 1
C2H4 has 5 sigma and 1 pi bonds.
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