Hypophosphorous acid () is a powerful reducing agent. Which structural feature is directly responsib — p Block Elements Chemistry Question

💡 Solution & Explanation

In phosphorus oxoacids, reducing power is dictated strictly by the presence of direct P-H bonds. Hypophosphorous acid ($H_3PO_2$) has a tetrahedral central P atom bonded to one $=O$, one $-OH$, and two direct $-H$ atoms, rendering it a strong reducing agent.