Question

Consider the following six vibrational modes :
symmetric stretching of CO₂, O-H symmetric stretching of H₂O, stretching of HCl, stretching of H₂, N-H symmetric stretching of NH₃, and bending of CO₂.
Among these modes, if k number of modes are IR active but Raman inactive, l number of modes are IR inactive but Raman active, and m number of modes are both IR and Raman active.
k, l, and m, respectively, are

• A. 1, 3 and 2
• B. 3, 1 and 2
• C. 1, 2 and 3
• D. 2, 1 and 3

Answer 1

The Correct Option is C

The correct option is (C) : 1, 2 and 3.