Chemistry · CHEMICAL BONDING AND MOLECULAR STRUCTURE

The experimentally determined carbon-oxygen bond length in \( \text{CO}_2 \) is \( 115\text{ pm} \). This value is intermediate between which of the following standard bond lengths?

1. \( \text{C}-\text{O} \) (\( 143\text{ pm} \)) and \( \text{C}=\text{O} \) (\( 121\text{ pm} \))
2. \( \text{C}=\text{C} \) (\( 133\text{ pm} \)) and \( \text{C}\equiv\text{C} \) (\( 120\text{ pm} \))
3. \( \text{C}-\text{O} \) (\( 143\text{ pm} \)) and \( \text{C}\equiv\text{O} \) (\( 110\text{ pm} \))
4. \( \text{C}=\text{O} \) (\( 121\text{ pm} \)) and \( \text{C}\equiv\text{O} \) (\( 110\text{ pm} \))