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MHT CET202020 Oct 2020Morning ShiftChemistryChemical Bonding and Molecular StructureActual

What is bond length of C - C bond in alkane having all carbon atoms sp ³ hybrid?

Options

  1. A154 pm
  2. B133 pm
  3. C112 pm
  4. D120 pm

Correct answer

A. 154 pm

Step-by-step solution

The carbon-carbon bond, with a bond length of 1.54 ~Ã… , is formed by overlap of one sp3 orbital from each of the carbons, while the six carbon-hydrogen bonds are formed from overlaps between the remaining sp3 orbitals on the two carbons and the 1s orbitals of hydrogen atoms. All of these are sigma bonds.

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