How Many Countries Are Members of the European Union as of May

question 114

Multiple Choice

How many countries are members of the European Union as of May 2016?

• A) 5
• B) 12
• C) 22
• D) 28

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Definitions:

Benzene

An aromatic hydrocarbon consisting of a ring of six carbon atoms with alternating double bonds, known for its stability and resonance structures.

Stepwise Mechanism

A reaction mechanism that occurs through multiple sequential steps, with intermediates formed along the reaction pathway.

Resonance Structures

Different Lewis structures that represent the same molecule, illustrating the delocalization of electrons within the molecule.

Intermediate

A temporary species formed during the conversion of reactants into products in a chemical reaction.