Question

$B^{3+}$ ion can not exist in aqueous solution because of its :

• A. strong reducing ability
• B. strong oxidizing ability
• C. small size and large charge
• D. large size and small charge

Answer 1

The correct option is C small size and large charge

On account of higher charge density i.e. charge/size ratio it gets hydrolysed forming $H_{3}B{O}_3$ .
$2B^{3+}+6H_{2}O⟶2H_{3}B{O}_3+6H^{+}$