Carbon dioxide CO2 has three vibrational modes: symmetric stretching, bending, and asymmetric stretching. Using infrared spectroscopy, the vibrational frequencies for these modes are as follows:1. Symmetric stretching 1 : ~1286 cm2. Bending 2 : ~667 cm3. Asymmetric stretching 3 : ~2349 cmPlease note that these values are approximate and can vary slightly depending on the experimental conditions and sample purity.