<p>Calculate the number of unpaired electrons in the following gaseous ions:</p>

<p><span class="equation">\(Mn^{3+}\)</span>&nbsp;and&nbsp;<span class="equation">\(Cr^{3+}\)</span>&nbsp;(atomic number of Cr = 24, Mn = 25)​​​​​​​</p>

<p>Which one of them is most stable in aqueous solution and why?</p>