# Chapter 9 - Exercises - Page 421: 37

The Lewis symbols are shown in the attached image.

#### Work Step by Step

The Lewis symbol shows the number of valence electrons. a) $Al$ has 3 valence electrons b) $Na^+$ loses an electron and has no valence electrons c) $Cl$ has 7 valence electrons d) $Cl^-$ gains an electron and has 8 valence electrons

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