The number and type of bonds in C 2 2 - ion in CaC 2 are:

The number and type of bonds in C22- ion in CaC2 are:
  1. Two σ-bonds and two π-bonds
  2. One σ-bond and two π-bonds
  3. One σ-bond and one π-bond
  4. Two σ-bonds and one π-bond

Solution

The structure of calcium carbide is:

Ca2+C≡C2-

Both C atoms are sp hybridised. The carbide anion, having 2 units of negative charge between two carbon atoms, has 1 σ and 2 π bonds.
 

Asked in: JEE Main 2014 (09 Apr Online)

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