when the atomic orbitals undergo hybridization then all the hybrid formed are equivalent so the bond lengths should also be equivalent then why in ethane the bond lengths of C-C and C-H are different as 154 picometre and 109 picometre
Dear student,
The chemical formula for ethane is C2H6, that is it is formed from two atoms of carbon and six atoms of hydrogen. In C2H6, each carbon atom undergoes sp3 hybridisation and forms four sp3 hybrid orbitals. The sp3 hybrid orbitals of each carbon atom overlaps with an s orbital of three hydrogen atoms and an sp3 orbital of another carbon atom. Thus, there are 7 sigma bonds in ethane ( six C-H and one C-C) in ethane and hybridisation is sp3. The carbon-carbon bond with a bond length of 154 picometre, is formed by the overlap of one sp3 orbitals from each of the carbons, while the six C-H bonds are formed by the remaining sp3 orbitals on the two carbons and the 1s orbitals of hydrogen atoms. The size of carbon and hydrogen atoms differ that is why the bond lengths differ.
Also the C-H bond length is same for all the six C-H bonds
Regards
Dear student,
The chemical formula for ethane is C2H6, that is it is formed from two atoms of carbon and six atoms of hydrogen. In C2H6, each carbon atom undergoes sp3 hybridisation and forms four sp3 hybrid orbitals. The sp3 hybrid orbitals of each carbon atom overlaps with an s orbital of three hydrogen atoms and an sp3 orbital of another carbon atom. Thus, there are 7 sigma bonds in ethane ( six C-H and one C-C) in ethane and hybridisation is sp3. The carbon-carbon bond with a bond length of 154 picometre, is formed by the overlap of one sp3 orbitals from each of the carbons, while the six C-H bonds are formed by the remaining sp3 orbitals on the two carbons and the 1s orbitals of hydrogen atoms. The size of carbon and hydrogen atoms differ that is why the bond lengths differ.
Also the C-H bond length is same for all the six C-H bonds
Regards
