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Chiral Centres and Chirality

The proton wh...

Question

The proton which requires the least energy for a homolytic bond cleavage of $C - H$ is:

A

H_{a}

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B

H_{b}

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C

H_{c}

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D

All have equal energy

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Solution

The correct option is B $H_{a}$
The homolytic cleavage of $C - H_{a}$ will produce the most stabilised radical. Hence, minimum energy will be required.

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Which of the following cleavage of bond can result in Homolytic Cleavage?

Q. The amount of energy required to break a bond is same as the amount of energy released when the same bond is formed. In gaseous state, the energy required for homolytic cleavage of a bond is called Bond Dissociation Energy (BDE) or Bond Strength. BDE is affected by s-character of the bond and the stability of the radicals formed. Shorter bonds are typically stronger bonds. BDEs for some bonds are given below:

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Chiral Centres and Chirality

Standard XII Chemistry