Question

An infrared wavelength of 4.48um is equivalent to a wavenumber of cm-1 Which region of the electromagnetic spectrum, IR or UV, contains photons of the higher energy? Which region of the electromagnetic spectrum, radio or visible, is characterized by waves of shorter wavelength? Which region of the electromagnetic spectrum, IR or X-ray, is characterized by waves of lower frequency? Which has a lower characteristic stretching frequency, the C-H or C-D bond? Which has a lower characteristic stretching frequency, the C O bond or the C O bond?

Answer 1

0 4.48mm lam- lobor - 4.48816ben wavelength in un= 10,000 wavelength in eun- 1 - 10000 An-1 10,000 4.48 22 ,232 an-l Electromagnete spection Radio Vorey txray 14 v vinble (lk 1 al ware foed wavelength increases Frequency of energy increases un contains photon of higher energy visible is characterized by shorler wavelength [ higher frequency) • IR is characterized by lower frequency of linger X.

u= reduced mass. ko force constant of bond Do strelching frequency AS mass of D is grealen a H. hence c-D has lower. than H. stretching frequeing Go co , bond , bond order-2 ardu= 1. i-o has lower streliching