The number and type of bonds between carbon atoms in calcium carbide are

Options

A. two sigma, one pi
B. two sigma, two pi
C. one sigma, one pi
D. one sigma, two pi.

Explanation

To determine the number and type of bonds between carbon atoms in calcium carbide (calcium acetylide), we can follow these steps:

### Step 1: Understand the Structure of Calcium Carbide
Calcium carbide (CaC₂) consists of one calcium atom and two carbon atoms. The carbon atoms are bonded to each other and to the calcium atom.

### Step 2: Identify the Bonding Between Carbon Atoms
In calcium carbide, the two carbon atoms are bonded to each other through a triple bond. A triple bond consists of one sigma bond and two pi bonds.

### Step 3: Count the Bonds
- **Sigma Bonds**: There is 1 sigma bond between the two carbon atoms.
- **Pi Bonds**: There are 2 pi bonds between the two carbon atoms.

### Step 4: Summarize the Bonding
Thus, the bonding between the two carbon atoms in calcium carbide can be summarized as:
- 1 sigma bond
- 2 pi bonds

### Step 5: Conclusion
Therefore, the number and type of bonds between carbon atoms in calcium carbide are 1 sigma bond and 2 pi bonds.

### Final Answer
The number and type of bonds between carbon atoms in calcium carbide are 1 sigma bond and 2 pi bonds.

---