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Ch.2 - Atoms, Molecules & Ions
Chapter 2, Problem 38

If yellow spheres represent sulfur atoms and red spheres represent oxygen atoms, which of the following drawings shows a collection of sulfur dioxide (SO2) units?
(a)
(b)
(c)
(d)

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Key Concepts

Here are the essential concepts you must grasp in order to answer the question correctly.

Chemical Formula

A chemical formula represents the composition of a compound using symbols for the elements and numerical subscripts to indicate the number of atoms of each element. For sulfur dioxide (SO2), the formula indicates one sulfur atom and two oxygen atoms, which is essential for visualizing the molecular structure.
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Molecular Structure

Molecular structure refers to the arrangement of atoms within a molecule, including the bonds between them. In SO2, the sulfur atom is centrally located with two oxygen atoms bonded to it, forming a bent shape due to the repulsion of lone pairs of electrons on the sulfur atom.
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Representation of Atoms

In molecular models, different colors or shapes are often used to represent different types of atoms. In this question, yellow spheres represent sulfur atoms and red spheres represent oxygen atoms. Understanding this representation is crucial for correctly identifying the structure of sulfur dioxide among the provided drawings.
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