Chat with AIExam 4: Chemical Bonds
Draw the electron dot formula for carbon monoxide,CO.
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Answered by Examlex AI CopilotThe electron dot formula, also known as the Lewis dot structure, for carbon monoxide (CO) is a representation of the bonding between the carbon (C) and oxygen (O) atoms, as well as the lone pairs of electrons on each atom. Carbon monoxide is a diatomic molecule with a triple bond between carbon and oxygen and a lone pair of electrons on the oxygen atom. Here is how you can draw the Lewis dot structure for CO:
1. Count the total number of valence electrons. Carbon has 4 valence electrons, and oxygen has 6 valence electrons, giving a total of 10 valence electrons for the CO molecule.
2. Determine the central atom. In CO, carbon is less electronegative than oxygen, so carbon will be the central atom.
3. Arrange the atoms. Place carbon in the center and oxygen next to it.
4. Start by forming a single bond between carbon and oxygen, which accounts for 2 of the 10 valence electrons.
5. Distribute the remaining valence electrons as lone pairs. Oxygen will have 6 electrons to start with (3 lone pairs), and carbon will have 2 electrons (1 lone pair).
6. Check the octet rule. Both carbon and oxygen need to have a full octet (8 electrons) for maximum stability. However, with the current arrangement, carbon only has 4 electrons around it.
7. To satisfy the octet rule, form multiple bonds between carbon and oxygen. You will need to form a triple bond between carbon and oxygen to give both atoms an octet. This means you will move two lone pairs from oxygen to form two additional bonds with carbon.
8. After forming the triple bond, oxygen will have one lone pair remaining, and carbon will have no lone pairs, but both will have an octet.
The final Lewis dot structure for carbon monoxide (CO) will look like this:
```
:C≡O:
..
```
In this structure, the colon (:) represents a lone pair of electrons, and the triple line (≡) represents a triple bond, which consists of six electrons (three pairs). The lone pair on oxygen is shown as two dots above the oxygen atom.
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