Question

The number and type of bonds between two carbon atoms in $Ca{C}_2$ are

• A. one sigma and one pi bond
• B. one sigma and two pi bonds
• C. one sigma and one and a half pi bond
• D. one sigma bond

Answer 1

The correct option is B

one sigma and two pi bonds

$C{a}^{2+}{C}_2^{2-}$

structure of $C_2^{2-}$ :${}^{(-)}C\equiv C^{(-)}$: