Suppose the atoms in a two-dimensional crystal have the following arrangement: 
How many atoms are in one unit cell?
Definitions:
Pleasure
The sensation of happiness, enjoyment, or satisfaction derived from an experience.
Perspective
A particular attitude towards or way of regarding something; a point of view.
Scaffolding
An educational approach that provides support to students tailored to their learning needs, enabling them to achieve higher levels of understanding.
Authoritarian Parenting
A restrictive, punitive parenting style in which the parent exhorts the child to follow the parent’s directions and to value hard work and effort.
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