Question

carbon di oxide molecule is IR active since​

Answer 1

Answer:

Since carbon dioxide is linear it has 3n−5=4 vibrations and they are pictured below. The symmetric stretch does not result in a change (of the initially zero dipole moment), so it is ir-inactive. The asymmetric stretch does result in a change in dipole moment so it is ir-active.

Explanation:

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Answer 2

Answer:

The bending motion of carbon dioxide is IR active because there is a change in the net molecule dipole .Since the bending motion involves no changes in bond length, there is no change in the polarizability of the molecule.

since carbon dioxide is linear it has 3n-5= 4 vibrations and they are pictured below. The symmetric stretch does not result in a change ( of the initially zero dipole movement ), so it is IR is inactive .The asymmetric stretch does result in a change dipole movement so it is IR - active.