# What is the ionic compound containing beryllium and oxygen?

Mar 2, 2015

Beryllium oxide.

#### Explanation:

The ionic compound containing beryllium and oxygen is beryllium oxide. The beryllium ion has a charge of $\text{2"^+}$ and has the symbol $\text{Be"^(2+)}$. The oxide ion has a charge of $\text{2"^-}$ and has the symbol $\text{O"^(2-)}$. The formula unit for beryllium oxide is $\text{BeO}$.

BeO can be produced by the reaction between beryllium and oxygen. In this reaction, each Be atom loses its two valence electrons to O atoms, forming $\text{Be"^(2+)}$ ions and $\text{O"^(2-)}$ ions. The electrostatic attraction between the oppositely charged ions forms the ionic bond.
$\text{2Be}$ + $\text{O"_2}$ $\rightarrow$ $\text{2Be"^(2+)}$ + $\text{2O"^(2-)}$ $\rightarrow$ $\text{2BeO}$.

Note: BeO forms a crystal lattice with covalent character, and has an intermediate ionic-covalent character.
http://www.docbrown.info/page07/ASA2ptable4b.htm
http://www.docbrown.info/page07/ASA2ptable4.htm