AP Chemistryeasymcq1 pt
Which of the following correctly ranks atomic radii from smallest to largest?
A.F < C < Na < Cs
B.Cs < Na < C < F
C.Na < F < C < Cs
D.C < F < Na < Cs
Explanation
Core Concept
Radius decreases across a period (F < C) as effective nuclear charge rises, and increases down a group (Na < Cs) as new shells add. Fluorine is smallest of these; cesium is largest.
Correct Answer
AF < C < Na < Cs
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