The most stable conformation of 2,3-dibromobutane,viewed through the C-2-C-3 bond : 
Definitions:
Personal Fable
A concept in adolescent psychology referring to a belief held by some adolescents that they are unique and exceptional and therefore not subject to the rules that govern the rest of the world.
Formal Operational Reasoning
A stage in Piaget's theory of cognitive development where individuals are able to think abstractly and logically.
Selective Attention
The cognitive process of focusing on certain information while ignoring other stimuli.
Abstract Thought
The ability to think about objects, principles, and ideas that are not physically present.
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