Answer the following questions using the simulation found on the link below: PAR

Question

Answer the following questions using the simulation found on the link below: PART 4 MOLECULES IN THE SIMULATION The interaction of light with a molecule depends on characteristics of the molecule The presences of nonbonding lone-pair electrons or bond dipoles are two examples. Identify at least 2 more characteristics PART 5: GENERALIZED OBSERVATIONS Return to your earlier classification and try to identify molecular characteristics associated with a particular interaction with electromagnetic radiation. Which Molecules were affected? General Rule to Predict Activity Type of Radiation Hint: Drawing Lewis structures may help. Microwave Infrared Visible Ultraviolet

Explanation / Answer

Part 4)

Interactions of light with molecules, depends upon conjugation such that higher the conjugation greater would be the shift in the electromagnetic spectrum.

Also, the intermolecular bonds enhance the effect on the interaction of light with the molecule in question.

All these are directly related to the concentration of the molecule in the solution.

Part 5)

Classification of molecular characteristics with electromagnetic radiations

Type of radiation : Microwave

molecules getting affected : molecules which does not have a permanent dipole in the ground state

Rule to predict activity : Change of dipole upon excitation by rotation.

Type of radiation : Infrared

molecules getting affected : polar bond containing molecules

Rule to predict activity : The molecule must show a change in polarity or dipole moment when light is absorbed by it.

Type of radiation : Visible

molecules getting affected : A greatly conjugated system

Rule to predict activity : This is visible by naked eyes as the radiation absorbed (wavelength) is in much higher region of electromagnetic spectrum.

Type of radiation : Ulraviolet

molecules getting affected : molecules with Conjugated bonds

Rule to predict activity : Higher the conjugation greater would be the pi-pi transition and higher would be the wavelength of light absorbed.

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