Which of the following regions in the electromagnetic spectrum corresponds to th

Question

Which of the following regions in the electromagnetic spectrum corresponds to the radiation with the ongest wavelength? a. radio waves b. ultraviolet c. infrared d. visible 2. What are the units of wavenumber, V, in infrared spectroscopy? a. cm b. cm-1 d. none, wavenumber is a dimensionless quantity 3. What are the units of wavenumber, V, in infrared spectroscopy? c. J mol- a. cm cm- c. J.mol- d. none, wavenumber is a dimensionless quantity 4. What is required for a bond to give an infrared absorption? a. a change in bond length during vibration b. a change in bond angle during vibration c. a change in bond dipole during vibration d. a change in reduced mass during vibration

Explanation / Answer

1)
Radio waves wave longest wavelength
then comes infrared
then comes visible and
ultraviolet have shortest wavelength
Answer: a

2)
This is wavenumber which is defined as
1/wavelength
So, unit is cm-1
Answer:b

3)
This is same as 2

I am allowed to answer only 1 question at a time

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