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Methane (CH; 4) (N=5) It is a non-linear molecule. Hence, 3N-6 = 3x5-6 = 9 Fundamental vibrational modes. 2. Benzene (C 6 H 6) (N=12) It is a non-linear molecule. Hence, 3N-6 = 3x12-6 = 30 Fundamental vibrational modes. Water (H 2 O) (N=3) It is a non-linear molecule. Hence, 3N-6 = 3x9-6 = 3 Fundamental vibrational modes. (i) Symmetric stretching ................
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