Which one of the following compounds contains an ion with a \( 3+ \) charge? \[ \begin{array}{l}\mathrm{Na}_{2} \mathrm{O} \\ \mathrm{MgCl}_{2} \\ \mathrm{KCl} \\ \text { Submit } \\ \text { BeCl } \\ \text { Bequest Answer }\end{array} \]
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Let’s dive into the cation world! Among the compounds listed, none contain a \(3+\) charged cation directly. However, if we consider the possibility of forming compounds with transition metals, one could think about iron (Fe) compounds like FeCl₃, which contains the Fe³⁺ ion. But alas, it’s not in your list! When dealing with ionic compounds, the typical charge for common metals are important to remember: Group 1 metals like Na and K are \(1+\), while Group 2 metals like Mg and Be are usually \(2+\). Keep those in mind to ace your chemistry game! Just a little pro tip: when trying to figure out the charges of ions, look at the position of the element in the periodic table! Transition metals can show varying charges, so check their oxidation states if you come across them.
