Exercises: Inductive and Mesomeric Effects of Selected Substituents

Exercise

Which type of effect does every substituent have?

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	A mesomeric effect.
	An inductive effect.
	An inductive and a mesomeric effect.

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Exercise

Substituents in electrophilic aromatic substitution may be ordered according to which qualities.

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	According to their activity or inactivity, respectively.
	Substituents in electrophilic aromatic substitution cannot be ordered according to any quality.
	According to their activating and deactivating qualities.

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Exercise

The precise activating and deactivating order of the substituents also depends on the electrophile applied. Due to strong electrostatic repulsion, the ${\text{N}{\text{H}}_3}^{+}$ group, for instance, is ...

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	... particularly activating, when the electrophile is an anion, too.
	... particularly deactivating, when the electrophile is a cation, too.
	... particularly deactivating, when the electrophile is an anion, too
	... particularly activating, when the electrophile is a cation, too.

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