Which is the corect order of increasing wave number of the stretching vibrations of (1) IC-H (alkane). (2) OH (alcohol). (3) CO (ketone), and (4) Cac (alkyne ( 1)

The 3N-6 vibrational modes of a molecule can be sub-subdivided into three general types ofdeformations.(i) Define these and draw their approximate potential energy functions.  (ii) Order the three types. Start with the one requiring the least energy to animate.(iii) Where are anharmonic modes generally located in the energetic ordering relative toother modes and what other name(s) are they know by?  (iv) Discuss the significance of anharmonic modes and why accurately characterisingthem is key to precise energetic determinations and to accurately modellingspecificity, selectivity and functionality in chemical phenomena.

9. Which of the following molecules has the lowest vibrational stretching frequency: a) 4H³5Cl b) 2H35CI C 4H37CI d) 4H³бCl for the identification of the nitrile (-CN)

Determine the number of vibrational modes that will be observed in (a) an Infrared experiment and (b) a Raman experiment for hydrazine (H₂N-NH2) in each of the following conformations - each one has a different point group: HH N-N HH (a) N-N HH HH (b) HH (c)

wayenumber of the fundamental vibrational transition of CS Seonne VEn 5an Scan ulate the force constant of the bond The [m 35C1 = 34.9688 u].