Question

The criteria for electronic spin resonance is?

Select one:

a. Periodic change in polarisability

b. Spin quantum number of nuclei > 0

c. Presence of unpaired electron in a molecule

d. Presence of chromophore in a molecule

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Answer 1

PRESENCE OF UNPAIRED ELECTION IN A MOLECULES

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Answer 2

• From the given question the correct option is c.

• As we know that the electron spin resonance is also called ESR.

• In a magnetic field when an unpaired electron compound is placed.

• It can be spin in different two ways.

• The microwave energy absorption can be measured by electronic spin resonance.

• Hence, the presence of unpaired electrons in a molecule is the criteria for electronic spin resonance.