Chemical Bonding - Result Question 7
####7. The number and type of bonds between two carbon atoms in $CaC _2$ are
(1996, 1M)
(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
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Answer:
Correct Answer: 7. (b)
Solution:
- The carbide $\left(C _2^{2-}\right)$ ion has the following bonding pattern:
- $$
- \overline{C} \equiv \overline{C}: \text { one sigma and two pi bonds. } $$
