Question

Which of the followings are the properties of CO ?

• A. It has 1 sigma bond and 2 $\pi$ bonds between carbon and oxygen
• B. CO act as lewis base
• C. CO is highly poisonous
• D. All of the above.

Answer 1

The correct option is D All of the above.

1. In CO, C and O is separated by a triple bond which means contain one sigma bond and 2 $\pi$ bonds between carbon and oxygen.
2. Due to presence of lone pair on C, CO act as a donar and reacts with certain metals when heated to give metal carbonyls.
3. CO is highly poisonous because it forms a stable complex with haemoglobin in blood which will reduce it capability of oxygen supply.