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AP Chemistry
1.7 Periodic Trends
IntermediateMCQConceptual19.1k
ElementAtomic numberValence electron configuration
\(\text{O}\)\(8\)\(2s^2\,2p^4\)
\(\text{F}\)\(9\)\(2s^2\,2p^5\)
\(\text{Cl}\)\(17\)\(3s^2\,3p^5\)

The atomic numbers and valence electron configurations for three nonmetal atoms are provided in the table above.

Which of the following correctly ranks the atoms in order of decreasing atomic radius, and provides the correct justification based on Coulomb's law and atomic structure?

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