# Chapter 7 - Ionic and Metallic Bonding - 7 Assessment: 52

Atomic radius is a periodic trend that tends to increase when moving down a group and decrease when moving across a period from left to right. Fluorine is one space to the right of oxygen, and consequently fluorine atoms are smaller than oxygen atoms. Fluorine is also above chlorine, also meaning that fluorine atoms are smaller than chlorine atoms.

#### Work Step by Step

Atomic radius is a periodic trend that tends to increase when moving down a group and decrease when moving across a period from left to right. Fluorine is one space to the right of oxygen, and consequently fluorine atoms are smaller than oxygen atoms. Fluorine is also above chlorine, also meaning that fluorine atoms are smaller than chlorine atoms.

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