Chemistry

Problem

The ionic compound with formula Al

_2

_3

is composed of Al

^{3+}

and O

^{2−}

ions. Which set lists the correct Lewis symbols for the ions present in one formula unit of the compound? a) 2

\text{Al}^{2+}

ions, each showing one dot, and 3

\text{O}^{2-}

ions, each showing four pairs of dots around O with a 2− superscript b) 2

\text{Al}^{3+}

ions, each showing no dots, and 3

\text{O}^{2-}

ions, each showing four pairs of dots around O with a 2− superscript c) 2

\text{Al}^{3+}

ions, each showing three dots, and 3

\text{O}^{2-}

ions, each showing four pairs of dots around O with a 2− superscript d) 2

\text{Al}^{3+}

ions, each showing no dots, and 3

\text{O}^{2-}

ions, each showing three pairs of dots around O with a 2− superscript