NMR 1 Flashcards
Light is a form of energy known as electromagnetic radiation. TRUE OR FALSE?
TRUE
The kind of light is not dependent upon the wavelength. TRUE OR FALSE?
FALSE
What can waves be discussed in terms of?
Frequency in seconds
What is the equation that can be used to describe frequency?
Frequency = speed of light / Wavelength
What is a particle of light called?
A photon
NMR uses higher wavelength radiation than IR. TRUE OR FALSE?
TRUE
NMR is lower energy spectroscopy. TRUE OR FALSE?
TRUE
A lower frequency = lower radiation. TRUE OR FALSE?
TRUE
NMR gives more information about sample but requires less energy than other techniques. TRUE OR FALSE?
TRUE
As frequency increases wavelength decreases. TRUE OR FALSE?
TRUE
Automated NMR is now a popular technique for dealing with multiple samples. TRUE OR FALSE?
TRUE
Describe briefly how a NMR machine works?
- A molecule is placed in a strong magnetic field
- Radio frequency radiation causes excitation in atomic nuclei, which gives information about the molecular skeleton
What are the advantages of using NMR?
- A powerful spectroscopic technique
- Gives a wealth of specific detail
- Even enables us to assign detailed biomolecules
What are the two types of NMR?
- 1H (proton NMR)
- 13C (carbon NMR)
In NMR every atom C or H in a given molecule that has a different environment gives a different signal. TRUE OR FALSE?
TRUE
