The highest common valency (or oxidation state) for the elements are: - Sulfur (S): Can exhibit +6 (e.g., in sulfates), so highest valency is Six (2). - Phosphorus (P): Can exhibit +5 (e.g., in phosphates), so highest valency is Five (1). - Lead (Pb): Can exhibit +4 (e.g., PbO₂), so highest valency is Four (4). - Silver (Ag): The most common valency/ oxidation state is +1. While higher, unstable oxidation states exist, +1 is the standard. The option provides 'Two' (3) as the highest valency for Silver. Assuming this option set is intended, the pairings match option B for A, B, and C.
Match List I with List II and select the correct answer using the code given below the Lists : List I List II (Element) (Highest Valency)
Asked in UPSC NDA 2 2016 · Topic: Inorganic Chemistry (Atomic Structure and Periodicity)
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