Question

Question 2 [1.5 pts] Which one of the following statements is correct? Tritium (T) is an isotope of hydrogen. Hint: tritium is heavier than hydrogen.

The absorption band due to a C-H bond occurs at a smaller wavenumber than the absorption band due to a C-T bond

The absorption band due to a C-H bond occurs at a larger wavenumber than the absorption band due to a C-T bond

Answer 1

C-H absorption wavenumber will be more than that of C-T because absorption wavenumber is inversely proportional to the reduced mass of the system and given by the below formula.

= 1 4 4 where k=force constant M= reduced mass u Mi+mz Data M = mime in amu to To convert this into Kg we multiply by 1.673 Xlo 2tka