Question

How many normal modes of vibration does the CO2 molecule possess?​

Answer 1

Explanation:

4 normal modes

Water has three normal modes of vibration, all of which are IR active. Carbon dioxide, a linear molecule, has 4 normal modes of vibration. Even though it does not have a permanent dipole moment, the dipole moment changes during 3 of the 4 modes, so carbon dioxide can absorb in the IR.

Answer 2

The vibration of the CO₂ molecule possesses 4 normal modes.

Vibrational modes of CO₂:

• Carbon dioxide is a linear molecule that has (3×3)−5 = 4 vibrations.
• They are answerable for the inexperienced domestic impact wherein warmth radiated from the earth is obtained (trapped) via way of means of CO₂ molecules withinside the atmosphere.

Explanation:

• The 4 normal modes of carbon dioxide. They are the symmetric stretch, the uneven stretch, and  bending modes.
• The  bending modes have equal strength and range best withinside the course of the bending motion.
• Modes that have equal strength are referred to as degenerate.
• Vibration inside CO₂ molecules is due to motion among the nuclear centers away from their minima, converting the nuclear distance and/or orientation of the molecule.
• There are degenerate bends and symmetric and uneven stretches.

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