## Chemistry: A Molecular Approach (3rd Edition)

Published by Prentice Hall

# Chapter 8 - Sections 8.1-8.9 - Exercises - Problems by Topic: 52a

#### Answer

Three valance electrons; Lose electrons.

#### Work Step by Step

Aluminum is a main group element. Therefore, its valance electrons are those in the outermost energy principal level. The noble gas configuration for Aluminum is $[Ne]3s^{2}3p^{1}$. Therefore, Aluminum has three valance electrons. Since, Aluminum is a metal, it is expected to lose electrons in chemical reactions.

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