Examlex
Which one of the following substituents will not direct the incoming group to the meta position during electrophilic aromatic substitution?
Middle Class
A social group between the upper and working classes, typically inclusive of professionals, business workers, and others with a moderate to high level of income.
Economic Order
A systematic arrangement of activities and institutions that collectively determine the production, distribution, and consumption of goods and services in a society.
Relative Luminance
A measure of the amount of light that is reflected from or emitted by a surface, viewed from a specific angle, and normalized to a scale from 0 to 1.
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