Question

Draw the MO diagram of CO molecule and explain it.


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Answer 1

Answer:

Explanation:

how

Answer 2

Answer:

The bond order of CO is 3, indicating a strong triple bond between carbon and oxygen.

Explanation:

The molecular orbital (MO) diagram for carbon monoxide (CO) can be constructed by combining the atomic orbitals of carbon and oxygen atoms.

First, let's consider the electronic configuration of the carbon and oxygen atoms. Carbon has 6 electrons and the electronic configuration of carbon is 1s2, 2s2, 2p2. Oxygen has 8 electrons and the electronic configuration of oxygen is 1s2, 2s2, 2p4.

When the atomic orbitals of carbon and oxygen combine, they form molecular orbitals. In the case of CO, the atomic orbitals that combine are the carbon 2s and 2p orbitals, and the oxygen 2p orbitals.

The MO diagram for CO is shown below:

   C 2p   O 2p

  ↑↑↓↓   ↑↑↓↓

2π*       2π*

 ↑        ↓

2σ        2σ

 ↑        ↓

1π        1π

 ↑        ↓

1σ        1σ

 ↑        ↓

Carbon    Oxygen

The MO diagram shows the molecular orbitals arranged in order of increasing energy, with the lowest energy orbitals at the bottom. The molecular orbitals are labeled as σ (sigma) and π (pi), which correspond to the symmetry of the orbitals.

The two lowest energy molecular orbitals, labeled 1σ and 2σ, are bonding orbitals that are formed by the overlap of the carbon 2s and 2p orbitals with the oxygen 2p orbitals. The electrons in these orbitals contribute to the covalent bond between carbon and oxygen.

The next two molecular orbitals, labeled 1π and 2π*, are anti-bonding orbitals that are formed by the overlap of the carbon 2p and oxygen 2p orbitals. These orbitals have higher energy and are not involved in the covalent bond formation.

The bond order of CO can be calculated by subtracting the number of electrons in the anti-bonding orbitals from the number of electrons in the bonding orbitals and dividing by 2. In the case of CO, the bond order is 3, indicating a strong triple bond between the carbon and oxygen atoms.

In summary, the MO diagram of CO shows the molecular orbitals formed by the combination of carbon and oxygen atomic orbitals. The bonding orbitals contribute to the covalent bond formation, while the anti-bonding orbitals do not. The bond order of CO is 3, indicating a strong triple bond between carbon and oxygen.

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