Which of the following statements regarding the inert pair effect are correct? — p Block Elements Chemistry Question

💡 Solution & Explanation

The inert pair effect arises from poor shielding by d and f electrons, making the $ns^2$ pair reluctant to participate in bonding. This stabilizes lower oxidation states (e.g., $Tl^+$ over $Tl^{3+}$, making statement C false). Because +2 is more stable for Pb, $Pb^{4+}$ easily reduces to $Pb^{2+}$, making it a strong oxidizing agent.