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the total number of rotational and vibrational deg
Question:
The total number of rotational and vibrational degrees of freedom for propene (C
3
H
6
), a nonlinear molecule with 9 atoms, are, respectively:
Show Hint
Nonlinear molecule: translational = 3, rotational = 3, vibrational = 3N - 6.
CPET - 2025
CPET
Updated On:
Jul 3, 2026
0 and 21
1 and 21
3 and 21
2 and 22
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Verified By Collegedunia
The Correct Option is
C
Solution and Explanation
Step 1:
Total DOF = 3N = 27 for N=9.
Step 2:
Nonlinear: 3 rotational.
Step 3:
Vibrational = 3N-6 = 21.
\[\boxed{\text{Rotational} = 3,\ \text{Vibrational} = 21}\]
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