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Which of these eight compounds are expected to abs

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Answer #1
Concepts and reason

The radiation of the compound depends on conjugation of molecules. The alternative single and double bond present in the molecule is represented as conjugation.

Fundamentals

Example for conjugation:

CH3
нс
H3C
-CH₂

If the compound has more conjugated bonds, it absorbs high radiation. Conjugated dienes absorb radiation above 200nm. From the above structures, the compound 2 has 2 conjugated bonds. Therefore, it absorbs radiation above 200nm. Compound 1 has only one double bond. Therefore, less radiation value will be observed.

There is no conjugated double bond. Therefore, the radiation will not be observed between 200nm and 400nm.

The above structure does not contain conjugated double bond. Therefore, the radiation will not be observed between 200nm and 400nm.

(e)

The above structure does not contain double bond and there is no conjugation. Therefore, the radiation will not be observed between 200nm and 400nm.

There is no conjugation that observed in the above structure. Therefore, the radiation will not be observed between 200nm and 400nm.

(h)

There is no conjugation that is observed in the above structure. Therefore, the radiation will not be observed between 200nm and 400nm.

The above structure contains conjugated double bonds in which the above compound is expected to absorb the radiation between 200nm and 400 nm.

Ans:

The compounds that are expected to observe the radiation between 200nm and 400nm:

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Which of these eight compounds are expected to absorb radiation between 200 and 400 nm?
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