Question

The number and type of bonds between two carbon atoms in $CaC_2$ are

• A. one sigma ($\sigma$) and one pi ($\pi$) bonds
• B. one sigma ($\sigma$)and two pi ($\pi$) bonds
• C. one sigma ($\sigma$) and one half pi ($\pi$) bonds
• D. one sigma ($\sigma$) bond

Answer 1

Answer: (B)

one sigma ($\sigma$)and two pi ($\pi$) bonds

Answer 2

The carbide $(C_2^{2-})$ ion has the following bonding pattern:
$:\overline{C}= \overline{C}:$ one sigma and two pi bonds.